Wed·Jul 26, 2017Wednesday·July 26, 2017

1. 01*

   Attractive vs. repulsive interactions in the Bose-Einstein condensation dynamics of relativistic field theories

   J. Berges🇩🇪 · K. Boguslavski🇫🇮 · A. Chatrchyan🇩🇪 · J. Jaeckel🇩🇪

   We study the impact of attractive self-interactions on the nonequilibrium dynamics of relativistic quantum fields with large occupancies at low momenta. Our primary focus is on Bose-Einstein condensation and nonthermal fixed points in such systems. As a model system we consider O(N)-symmetric scalar field theories. We use classical-statistical real-time simulations, as well as a systematic 1/N expansion of the quantum (2PI) effective action to next-to-leading order. When the mean self-interactions are repulsive, condensation occurs as a consequence of a universal inverse particle cascade to the zero-momentum mode with self-similar scaling behavior. For attractive mean self-interactions the inverse cascade is absent and the particle annihilation rate is enhanced compared to the repulsive case, which counteracts the formation of coherent field configurations. For N >= 2, the presence of a nonvanishing conserved charge can suppress number changing processes and lead to the formation of stable localized charge clumps, i.e. Q-balls.

   hep-phastro-ph.COPRD(2017)·27 citations
2. 02*

   Radiative Left-Right Dirac Neutrino Mass

   Ernest Ma🇺🇸 · Utpal Sarkar🇮🇳

   We consider the conventional left-right gauge extension of the standard model of quarks and leptons without a scalar bidoublet. We study systematically how one-loop radiative Dirac neutrino masses may be obtained. In addition to two well-known cases from almost 30 years ago, we find two new scenarios with verifiable predictions.

   hep-phPLB(2018)·50 citations
3. 03*

   Anomalous magnetic moment of the muon, a hybrid approach

   C. A. Dominguez🇿🇦 · H. Horch🇩🇪 · B. Jäger🇨🇭 · N. F. Nasrallah🇱🇧 · K. Schilcher🇿🇦 · H. Spiesberger🇩🇪 · H. Wittig🇩🇪

   A new QCD sum rule determination of the leading order hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon, $a_{\mu }^{\mathrm{hvp}}$, is proposed. This approach combines data on $e^{+}{e}^{-}$ annihilation into hadrons, perturbative QCD and lattice QCD results for the first derivative of the electromagnetic current correlator at zero momentum transfer, ${\Pi }_{\mathrm{EM}}^{\prime }(0)$. The idea is based on the observation that, in the relevant kinematic domain, the integration kernel $K(s)$, entering the formula relating $a_{\mu }^{\mathrm{hvp}}$ to $e^{+}{e}^{-}$ annihilation data, behaves like $1/s$ times a very smooth function of $s$, the squared energy. We find an expression for $a_{\mu }$ in terms of ${\Pi }_{\mathrm{EM}}^{\prime }(0)$, which can be calculated in lattice QCD. Using recent lattice results we find a good approximation for $a_{\mu }^{\mathrm{hvp}}$, but the precision is not yet sufficient to resolve the discrepancy between the $R(s)$ data-based results and the experimentally measured value.

   hep-phhep-latPRD(2017)·8 citations
4. 04*

   Phenomenology of the gauge symmetry for right-handed fermions

   Wei Chao🇨🇳

   In this paper we investigate the phenomenology of the U(1) gauge symmetry for right-handed fermions, where three right-handed neutrinos are introduced for anomalies cancellation. Constraints on the new gauge boson $Z_{\mathbf{R}}$ arising from $Z-Z^{\prime }$ mixing as well as the upper bound of $Z^{\prime }$ production cross section in di-lepton channel at the LHC are presented. We further study the neutrino mass generation and the phenomenology of $Z_{\mathbf{R}}$-portal dark matter in this model. The lightest right-handed neutrino can be the cold dark matter candidate stabilized by a $Z_2$ flavor symmetry. Our results show that active neutrino masses can be generated via the modified type-II seesaw mechanism; right-handed neutrino dark matter is available only for its mass at near the resonant regime of the SM Higgs and/or the new bosons; constraint from the dilepton search at the LHC is stronger than that from the $Z-Z^{\prime }$ mixing only for $g_{\mathbf{R}}<0.121$, where $g_{\mathbf{R}}$ is the new gauge coupling.

   hep-phEPJC(2018)·24 citations
5. 05*

   The neutrino propagator in matter and its spin properties

   D.M.Voronin🇷🇺 · A.E.Kaloshin🇷🇺

   A spectral representation for the neutrino propagator in a moving matter with constant density is constructed. It is found that in a matter there exists a 4-dimensional axis of complete polarization, all poles of the propagator are classified according to the values of the spin projection onto this axis.

   hep-phPisma Zh.Eksp.Teor.Fiz.(2017)·2 citations
6. 06*

   Half-life Expectations for Neutrinoless Double Beta Decay in Standard and Non-Standard Scenarios

   Shao-Feng Ge🇩🇪 · Werner Rodejohann🇩🇪 · Kai Zuber🇩🇪

   We investigate the half-life expectations for neutrinoless double beta decay by applying statistical distributions of neutrino mixing observables, neutrino mass constraints from cosmology and nuclear matrix elements. The analysis is performed in the standard scenario of active Majorana neutrino exchange, when light sterile neutrinos are added, and within TeV-scale left-right symmetric frameworks. The latter two cases correspond to a modified phenomenology of double beta decay for a normal and inverted mass ordering, and thus different discovery potential for future experiments.

   hep-phhep-exPRD(2017)·16 citations
7. 07*

   Entropy Production During Hadronization of a Quark-Gluon Plasma

   Tamas S. Biro🇭🇺 · Zsolt Schram🇭🇺 · Laszlo Jenkovszky🇺🇦

   We revisit the physical pictures for the hadronization of quark-gluon plasma, concentrating on the problem of entropy production during processes where the number of degrees of freedom is seemingly reduced due to color confinement. Based on observations on Regge trajectories we propose not having an infinite tower of hadronic resonances. We discuss possible entropy production mechanisms far from equilibrium in terms of stochastic dynamics.

   hep-phcond-mat.stat-mechnucl-thEPJA(2018)·5 citations
8. 08*

   Constraints on Kähler moduli inflation from reheating

   Sukannya Bhattacharya🇮🇳 · Koushik Dutta🇮🇳 · Anshuman Maharana🇮🇳

   We present predictions of the Kähler moduli inflation model for the spectral tilt by parametrising the reheating epoch by an effective equation-of-state parameter and the number of e-foldings of reheating; and taking into account the post-inflationary history of the model. This model has an epoch in which the energy density of the universe is dominated by cold moduli particles. We compare our results with data from the PLANCK mission and find that exotic reheating (with effective equation of state $w_{\mathrm{re}}$ greater than 1/3) is required to match the observations. For canonical reheating case with $w_{\mathrm{re}}=0$, we deduce ${\text{log}}_{10}(T_{\mathrm{re}}/10^3\text{GeV})\simeq 1190(n_s-0.956)$. We also analyse our results in the context of observations being planned for the future and their projected sensitivities.

   hep-phastro-ph.COgr-qchep-thPRD(2017)·31 citations
9. 09*

   Reconstructing a light pseudoscalar in the Type-X Two Higgs Doublet Model

   Eung Jin Chun🇰🇷 · Siddharth Dwivedi🇮🇳 · Tanmoy Mondal🇮🇳 · Biswarup Mukhopadhyaya🇮🇳

   We investigate the detectability as well as reconstructibility of a light pseudoscalar particle $A$, of mass in the 50 - 60 GeV range, which is still allowed in a Type-X (lepton-specific) two-Higgs doublet scenario. Such a pseudoscalar can be pair-produced in the decay $h\to AA$ of the 125 GeV scalar $h$. The light pseudoscalar in the aforementioned range, helpful in explaining the muon anomalous magnetic moment, has not only substantial branching ratio in the ${\tau }^{+}{\tau }^{-}$ channel but also one of about $0.35\%$ in the ${\mu }^{+}{\mu }^{-}$ final state. We show how to faithfully reconstruct the $A$ mass using the ${\mu }^{+}{\mu }^{-}$ mode, and establish the existence of a pseudoscalar around 50 - 60 GeV, using the process $pp\to h\to AA\to {\mu }^{+}{\mu }^{-}{\tau }^{+}{\tau }^{-}$. This is the most reliable way of reconstructing the light $A$ mass, and is possible for an integrated luminosity of about $100{\mathrm{fb}}^{-1}$ or less at 14 TeV, with a statistical significance that amounts to discovery.

   hep-phPLB(2017)·20 citations
10. 10*

    Baryon Asymmetry and Gravitational Waves from Pseudoscalar Inflation

    Daniel Jimenez🇩🇪 · Kohei Kamada🇺🇸 · Kai Schmitz🇩🇪 · Xun-Jie Xu🇩🇪

    In models of inflation driven by an axion-like pseudoscalar field, the inflaton, a, may couple to the standard model hypercharge via a Chern-Simons-type interaction, $L\subset a/(4\Lambda )F\tilde{F}$. This coupling results in explosive gauge field production during inflation, especially at its last stage, which has interesting phenomenological consequences: For one thing, the primordial hypermagnetic field is maximally helical. It is thus capable of sourcing the generation of nonzero baryon number, via the standard model chiral anomaly, around the time of electroweak symmetry breaking. For another thing, the gauge field production during inflation feeds back into the primordial tensor power spectrum, leaving an imprint in the stochastic background of gravitational waves (GWs). In this paper, we focus on the correlation between these two phenomena. Working in the approximation of instant reheating, we (1) update the investigation of baryogenesis via hypermagnetic fields from pseudoscalar inflation and (2) examine the corresponding implications for the GW spectrum. We find that successful baryogenesis requires a suppression scale Lambda of around Lambda ~ 3 x 10^17 GeV, which corresponds to a relatively weakly coupled axion. The gauge field production at the end of inflation is then typically accompanied by a peak in the GW spectrum at frequencies in the MHz range or above. The detection of such a peak is out of reach of present-day technology; but in the future, it may serve as a smoking-gun signal for baryogenesis from pseudoscalar inflation. Conversely, models that do yield an observable GW signal suffer from the overproduction of baryon number, unless the reheating temperature is lower than the electroweak scale.

    hep-phastro-ph.COhep-thJCAP(2017)·105 citations
11. 11*

    Lepton-flavor universality limits in warped space

    Eugenio Megias🇪🇸 · Mariano Quiros🇪🇸 · Lindber Salas🇪🇸

    We explore the limits on lepton-flavor universality (LFU) violation in theories where the hierarchy problem is solved by means of a warped extra dimension. In those theories LFU violation, in fermion interaction with Kaluza-Klein modes of gauge bosons, is provided ab initio when different flavor of fermions are differently localized along the extra dimension. As this fact arises from the mass pattern of quarks and leptons, LFU violation is natural in this class of theories. We analyze the experimental data pointing towards LFU violation, as well as the most relevant electroweak and flavor observables, and the LFU tests in the $\mu /e$ and $\tau /\mu$ sectors. We find agreement with $R_{K^{(\ast )}}$ and $R_{D^{(\ast )}}$ data at 95% CL, provided the third generation left-handed fermions are composite ($0.14<c_{b_L}<0.28$ and $0.27<c_{{\tau }_L}<0.33$), and find the absolute limits $R_{K^{(\ast )}}\gtrsim 0.79$ and $R_{D^{(\ast )}}/R_{D^{(\ast )}}^{\mathrm{SM}}\lesssim 1.13$. Moreover we predict $\mathcal{B}(B\to K\nu \bar{\nu })\gtrsim 1.14\times 10^{-5}$ at 95% CL, smaller than the present experimental upper bound but a few times larger than the Standard Model prediction.

    hep-phPRD(2017)·18 citations
12. 12*

    Novel measurements of anomalous triple gauge couplings for the LHC

    A. Azatov🇮🇹 · J. Elias-Miro🇮🇹 · Y. Reyimuaji🇮🇹 · E. Venturini🇮🇹

    Finding better ways to prove the Standard Model Effective Field Theory is a very important direction of research. This paper focuses on measurements of Electroweak triple gauge couplings, paying special attention on the regime of validity of the Effective Field Theory (EFT). In this regard, one of our goals is to find measurements leading to a large increase of the interference between the SM amplitude and the contribution of irrelevant operators in the EFT. We propose two such distributions that will lead to a better accuracy. Improvements compared to the traditional methods as well as LHC high luminosity prospects are discussed.

    hep-phJHEP(2017)·99 citations
13. 13*

    Magnetic Monopoles and Free Fractionally Charged States at Accelerators and in Cosmic Rays

    Thomas W. Kephart🇺🇸 · George K. Leontaris🇬🇷 · Qaisar Shafi🇺🇸

    Unified theories of strong, weak and electromagnetic interactions which have electric charge quantization predict the existence of topologically stable magnetic monopoles. Intermediate scale monopoles are comparable with detection energies of cosmic ray monopoles at IceCube and other cosmic ray experiments. Magnetic monopoles in some models can be significantly lighter and carry two, three or possibly even higher quanta of the Dirac magnetic charge. They could be light enough for their effects to be detected at the LHC either directly or indirectly. An example based on a D-brane inspired $SU(3{)}_C\times SU(3{)}_L\times SU(3{)}_R$ (trinification) model with the monopole carrying three quanta of Dirac magnetic charge is presented. These theories also predict the existence of color singlet states with fractional electric charge which may be accessible at the LHC.

    hep-phhep-exhep-thJHEP(2017)·36 citations
14. 14*

    Effective Euler-Heisenberg Lagrangians in models of QED

    Filip Přeučil🇨🇿 · Jiří Hořejší🇨🇿

    The main goal of this paper is a direct diagrammatic evaluation of the effective four-photon Lagrangian of the Euler-Heisenberg type for the quantum electrodynamics of massive charged vector bosons. This QED model is naturally embedded in the standard electroweak theory, and we have carried out the corresponding one-loop calculation in the unitary gauge. As far as we know, such a work has not been published before since usually the $R$-gauge techniques are preferred for the computation of loop Feynman diagrams. We have recovered the result obtained many years ago by Vanyashin and Terent'ev, who used a specific functional method. For completeness and for validation of our techniques, we have also redone the analogous calculations for scalar and spinor QED.

    hep-phhep-thJ.Phys.G(2018)·15 citations
15. 15*

    Scale Invariant Instantons and the Complete Lifetime of the Standard Model

    Anders Andreassen🇺🇸 · William Frost🇺🇸 · Matthew D. Schwartz🇺🇸

    In a classically scale-invariant quantum field theory, tunneling rates are infrared divergent due to the existence of instantons of any size. While one expects such divergences to be resolved by quantum effects, it has been unclear how higher-loop corrections can resolve a problem appearing already at one loop. With a careful power counting, we uncover a series of loop contributions that dominate over the one-loop result and sum all the necessary terms. We also clarify previously incomplete treatments of related issues pertaining to global symmetries, gauge fixing and finite mass effects. In addition, we produce exact closed-form solutions for the functional determinants over scalars, fermions and vector bosons around the scale-invariant bounce, demonstrating manifest gauge invariance in the vector case. With these problems solved, we produce the first complete calculation of the lifetime of our universe: 10^139 years. With 95% confidence, we expect our universe to last more than 10^58 years. The uncertainty is part experimental uncertainty on the top quark mass and on $\alpha s$ and part theory uncertainty from electroweak threshold corrections. Using our complete result, we provide phase diagrams in the $mt/mh$ and the $mt/\alpha s$ planes, with uncertainty bands. To rule out absolute stability to $3\sigma$ confidence, the uncertainty on the top quark pole mass would have to be pushed below 250 MeV or the uncertainty on $\alpha s(mZ)$ pushed below 0.00025.

    hep-phhep-thPRD(2018)·197 citations
16. 16*

    Electromagnetic transition form factors of baryons in the space-like momentum region

    Helios Sanchis-Alepuz🇦🇹 · Reinhard Alkofer🇦🇹 · Christian S. Fischer🇩🇪

    We present results from a calculation of the electromagnetic transition form factors between ground-state octet and decuplet baryons as well as the octet-only ${\Sigma }^0$ to $\Lambda$ transition. We work in the combined framework of Dyson-Schwinger equations and covariant Bethe-Salpeter equations with all elements, the baryon three body wave function, the quark propagators and the dressed quark-photon vertex determined from a well-established, momentum dependent approximation for the quark-gluon interaction. We discuss in particular the similarities among the different transitions as well as the differences induced by SU(3)-isospin symmetry breaking. We furthermore provide estimates for the slopes of the electric and magnetic ${\Sigma }^0$ to $\Lambda$ transitions at the zero photon momentum point.

    hep-phEPJA(2018)·31 citations
17. 17*

    Analysis of the Daya Bay Reactor Antineutrino Flux Changes with Fuel Burnup

    Anna Hayes🇺🇸 · Gerard Jungman🇺🇸 · Libby McCutchan🇺🇸 · Alejandro Sonzogni🇺🇸 · Gerry Garvey🇺🇸 · Xiaobao Wang🇨🇳

    We investigate the recent Daya Bay results on the changes in the antineutrino flux and spectrum with the burnup of the reactor fuel. We find that the discrepancy between current model predictions and the Daya Bay results can be traced to the original measured ${}^{235}$U/${}^{239}$Pu ratio of the fission beta spectra that were used as a base for the expected antineutrino fluxes. An analysis of the antineutrino spectra that is based on a summation over all fission fragment beta-decays, using nuclear database input, explains all of the features seen in the Daya Bay evolution data. However, this summation method still predicts an anomaly. Thus, we conclude that there is currently not enough information to use the antineutrino flux changes to rule out the possible existence of sterile neutrinos.

    ↳ nucl-thhep-exhep-phnucl-exPRL(2018)·53 citations
18. 18*

    Normalized Fuchsian form on Riemann sphere and differential equations for multiloop integrals

    Roman N. Lee🇷🇺 · Andrei A. Pomeransky🇷🇺

    We consider the question of reducibility of the differential system to normalized Fuchsian form on the Riemann sphere. The differential equations for the multiloop integrals in $ϵ$-form constitute a particular example of the normalized Fuchsian form. We formulate the algorithmic criterion of reducibility. We also consider the question of the proper choice of variable in the differential system suitable for its reduction to $ϵ$-form.

    ↳ hep-thhep-ph67 citations
19. 19*

    QCD monopoles, abelian projections and gauge invariance

    Adriano Di Giacomo🇮🇹

    It is shown that the creation of a monopole is a gauge invariant statement, based on topology. Creating a monopole is independent on the abelian projection in which it is created. This is fundamental in defining an order parameter for detecting dual superconductivity of the QCD vacuum.

    ↳ hep-lathep-phhep-th8 citations
20. 20*

    Limits on Axion Couplings from the first 80-day data of PandaX-II Experiment

    Changbo Fu🇨🇳 · Xiaopeng Zhou · Xun Chen · Yunhua Chen · Xiangyi Cui🇨🇳 · Deqing Fang🇨🇳 · Karl Giboni🇨🇳 · Franco Giuliani🇨🇳 · Ke Han🇨🇳 · Xingtao Huang🇨🇳 · Xiangdong Ji🇨🇳 · Yonglin Ju🇨🇳 and 25 other authors

    We report new searches for the solar axions and galactic axion-like dark matter particles, using the first low-background data from PandaX-II experiment at China Jinping Underground Laboratory, corresponding to a total exposure of about $2.7\times 10^4$ kg$\cdot$day. No solar axion or galactic axion-like dark matter particle candidate has been identified. The upper limit on the axion-electron coupling ($g_{Ae}$) from the solar flux is found to be about $4.35\times 10^{-12}$ in mass range from $10^{-5}$ to 1 keV/$c^2$ with 90\% confidence level, similar to the recent LUX result. We also report a new best limit from the ${}^{57}$Fe de-excitation. On the other hand, the upper limit from the galactic axions is on the order of $10^{-13}$ in the mass range from 1 keV/$c^2$ to 10 keV/$c^2$ with 90\% confidence level, slightly improved compared with the LUX.

    ↳ hep-exastro-ph.SRhep-phPRL(2017)·144 citations
21. 21*

    Collective longitudinal polarization in relativistic heavy-ion collisions at very high energy

    F. Becattini (1)🇮🇹 · Iu. Karpenko (2) ((1) U. Florence (2) INFN Florence)🇮🇹

    We study the polarization of particles in relativistic heavy-ion collisions at very high energy along the beam direction within a relativistic hydrodynamic framework. We show that this component of the polarization decreases much slower with center-of-mass energy compared to the transverse component, even in the ideal longitudinal boost-invariant scenario with non-fluctuating initial state, and that it can be measured by taking advantage of its quadrupole structure in the transverse momentum plane. In the ideal longitudinal boost-invariant scenario, the polarization is proportional to the gradient of temperature at the hadronization and its measurement can provide important information about the cooling rate of the Quark Gluon Plasma around the critical temperature.

    ↳ nucl-thhep-phPRL(2018)·245 citations
22. 22*

    Color Memory

    Monica Pate🇺🇸 · Ana-Maria Raclariu🇺🇸 · Andrew Strominger🇺🇸

    A transient color flux across null infinity in classical Yang-Mills theory is considered. It is shown that a pair of test `quarks' initially in a color singlet generically acquire net color as a result of the flux. A nonlinear formula is derived for the relative color rotation of the quarks. For weak color flux the formula linearizes to the Fourier transform of the soft gluon theorem. This color memory effect is the Yang-Mills analog of the gravitational memory effect.

    ↳ hep-thhep-phPRL(2017)·89 citations
23. 23*

    Primordial Spectra of slow-roll inflation at second-order with the Gauss-Bonnet correction

    Qiang Wu🇨🇳 · Tao Zhu🇨🇳 · Anzhong Wang🇺🇸

    The slow-roll inflation for a single scalar field that couples to the Gauss-Bonnet (GB) term represents an important higher-order curvature correction inspired by string theory. With the arrival of the era of precision cosmology, it is expected that the high-order corrections become more and more important. In this paper we study the observational predictions of the slow-roll inflation with the GB term by using the third-order uniform asymptotic approximation method. We calculate explicitly the primordial power spectra, spectral indices, running of the spectral indices for both scalar and tensor perturbations, and the ratio between tensor and scalar spectra. These expressions are all written in terms of the Hubble and GB coupling flow parameters and expanded up to the next-to-leading order in the slow-roll expansions. The upper bounds of errors of the approximations at the third-order are $0.15\%$, so they represent the most accurate results obtained so far in the literature. We expect that the understanding of the GB corrections in the primordial spectra and their constraints by forthcoming observational data will provide clues for the UV complete theory of quantum gravity, such as the string/M-theory.

    ↳ gr-qcastro-ph.COhep-phhep-thPRD(2018)·33 citations
24. 24*

    First results from the DEAP-3600 dark matter search with argon at SNOLAB

    DEAP-3600 Collaboration: P.-A. Amaudruz🇨🇦 · M. Baldwin🇬🇧 · M. Batygov🇨🇦 · B. Beltran🇨🇦 · C. E. Bina🇨🇦 · D. Bishop🇨🇦 · J. Bonatt🇨🇦 · G. Boorman🇬🇧 · M. G. Boulay🇨🇦 · B. Broerman🇨🇦 · T. Bromwich🇬🇧 · J. F. Bueno🇨🇦 and 92 other authors

    This paper reports the first results of a direct dark matter search with the DEAP-3600 single-phase liquid argon (LAr) detector. The experiment was performed 2 km underground at SNOLAB (Sudbury, Canada) utilizing a large target mass, with the LAr target contained in a spherical acrylic vessel of 3600 kg capacity. The LAr is viewed by an array of PMTs, which would register scintillation light produced by rare nuclear recoil signals induced by dark matter particle scattering. An analysis of 4.44 live days (fiducial exposure of 9.87 tonne-days) of data taken with the nearly full detector during the initial filling phase demonstrates the detector performance and the best electronic recoil rejection using pulse-shape discrimination in argon, with leakage $<1.2\times 10^{-7}$ (90% C.L.) between 16 and 33 keV${}_{ee}$. No candidate signal events are observed, which results in the leading limit on WIMP-nucleon spin-independent cross section on argon, $<1.2\times 10^{-44}$ cm${}^2$ for a 100 GeV/c${}^2$ WIMP mass (90% C.L.).

    ↳ astro-ph.COastro-ph.IMhep-exhep-phPRL(2018)·166 citations
25. 25*

    Cosmological forecasts from current observations of LIGO

    Deng Wang🇨🇳 · Xin-He Meng🇨🇳

    We use the simulated gravitational-wave data to explore the evolution of the universe in light of current observations of the Laser Interferometer Gravitational-Wave Observatory (LIGO). Taking advantage of state-of-the-art Markov Chain Monte Carlo technique to constrain the basic cosmological parameters, the Hubble constant, present matter density parameter and equation of state of dark energy, we find that LIGO needs about, at least 5-year data accumulation, namely about 1000 events, to achieve the accuracy comparable to the Planck result. We also find that, from a new information channel, the constrained value of the Hubble constant from 1000 simulated events is more consistent with the direct local observation by Riess et al. than the indirect global measurement by the Planck Collaboration at the $2\sigma$ confidence level. The combination of gravitational waves and electromagnetic signals is very prospective to reveal the underlying physics of the universe.

    ↳ astro-ph.COgr-qchep-ph1 citation
26. 26*

    Reconstruction of the remote dipole and quadrupole fields from the kinetic Sunyaev Zel'dovich and polarized Sunyaev Zel'dovich effects

    Anne-Sylvie Deutsch🇺🇸 · Emanuela Dimastrogiovanni🇺🇸 · Matthew C. Johnson🇨🇦 · Moritz Münchmeyer🇨🇦 · Alexandra Terrana🇨🇦

    The kinetic Sunyaev Zel'dovich (kSZ) and polarized Sunyaev Zel'dovich (pSZ) effects are temperature and polarization anisotropies induced by the scattering of CMB photons from structure in the post-reionization Universe. In the case of the kSZ effect, small angular scale anisotropies in the optical depth are modulated by the cosmic microwave background (CMB) dipole field, i.e. the CMB dipole observed at each spacetime point, which is sourced by the primordial dipole and especially the local peculiar velocity. In the case of the pSZ effect, similar small-scale anisotropies are modulated by the CMB quadrupole field, which receives contributions from both scalar and tensor modes. Statistical anisotropies in the cross correlations of CMB temperature and polarization with tracers of the inhomogeneous distribution of electrons provide a means of isolating and reconstructing the dipole and quadrupole fields. In this paper, we present a set of unbiased minimum variance quadratic estimators for the reconstruction of the dipole and quadrupole fields, and forecast the ability of future CMB experiments and large scale structure surveys to perform this reconstruction. Consistent with previous work, we find that a high fidelity reconstruction of the dipole and quadrupole fields over a variety of scales is indeed possible, and demonstrate the sensitivity of the pSZ effect to primordial tensor modes. Using a principle component analysis, we estimate how many independent modes could be accessed in such a reconstruction. We also comment on a few first applications of a detection of the dipole and quadrupole fields, including a reconstruction of the primordial contribution to our locally observed CMB dipole, a test of statistical homogeneity on large scales from the first modes of the quadrupole field, and a reconstruction technique for the primordial potential on the largest scales.

    ↳ astro-ph.COgr-qchep-phhep-thPRD(2018)·105 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.