Nuclear Theory·nucl-th

Wednesday·April 6, 2022

18 papers—9 primary·9 cross-listed

01
[Submitted on 4 Apr 2022]
Pseudo-gauges and relativistic spin hydrodynamics for interacting Dirac and Proca fields
Nora Weickgenannt🇩🇪 · David Wagner🇩🇪 · Enrico Speranza🇺🇸
We present the explicit expressions of different pseudo-gauge transformations for Dirac and Proca fields considering a general interaction term. The particular case of the interaction of Dirac and Proca fields with a background electromagnetic field is also studied. Starting from the quantum kinetic theory with collisions derived from the Wigner-function formalism for massive spin-1/2 and spin-1 particles, we establish a connection between different pseudo-gauges and relativistic spin hydrodynamics. The physical implications of the various decompositions of orbital and spin angular momentum are discussed.
Comments:
21 pages, no figures
Subjects:
Nuclear Theory (nucl-th)
arXiv:
2204.01797 [pdf]
PRD(2022)·54 citations
02
[Submitted on 4 Apr 2022]
Calculations of $p (n, γ) d$ reaction in chiral effective field theory
Weijie Du🇺🇸 · Soham Pal🇺🇸 · Mamoon Sharaf🇺🇸 · Peng Yin🇺🇸 · Shiplu Sarker🇺🇸 · Andrey M. Shirokov🇷🇺 · James P. Vary🇺🇸
We present a calculation of the radiative capture cross section $p (n, γ) d$ in the low-energy range, where the $M 1$ reaction channel dominates. Employing the LENPIC nucleon-nucleon interaction up to the fifth order (N4LO) that is regularized by the semi-local coordinate space regulators, we obtain the initial and final state wave functions, and evaluate the phase shifts of the scattering state and deuteron properties. We derive the transition operator from the chiral effective field theory up to the next-to-next-to leading order (N2LO), where we also regularize the transition operator using regulators consistent with those of the interactions. We compute the capture cross sections and the results show a converging pattern with the chiral-order expansion of the nucleon-nucleon interaction, where the regulator dependence of the results is weak when higher-order nucleon-nucleon interactions are employed. We quantify the uncertainties of the cross-section results due to the chiral-order truncation. The chirally complete and consistent cross-section results are performed up to N2LO and they compare well with the experiments and other theoretical predictions.
Comments:
13 pages, 3 tables, 1 figure
Subjects:
Nuclear Theory (nucl-th); Solar and Stellar Astrophysics (astro-ph.SR); High Energy Physics — Phenomenology (hep-ph)
arXiv:
2204.01865 [pdf]
PRC(2022)·12 citations
03
[Submitted on 5 Apr 2022]
Applications of the dynamical generator coordinate method to quadrupole excitations
N. Hizawa · K. Hagino · K. Yoshida
We apply the dynamical generator coordinate method (DGCM) with a conjugate momentum to a nuclear collective excitation. To this end, we first discuss how to construct a numerically workable scheme of the DGCM for a general one-body operator. We then apply the DGCM to the quadrupole vibration of $^{16}$ O using the Gogny D1S interaction. We show that both the ground state energy and the excitation energies are lowered as compared to the conventional GCM with the same number of basis functions. We also compute the sum rule values for the quadrupole and monopole operators, and show that the DGCM yields more consistent results than the conventional GCM to the values from the double commutator. These results imply that the conjugate momentum is an important and relevant degree of freedom in collective motions.
Comments:
9 pages, 4 figures
Subjects:
Nuclear Theory (nucl-th); Strongly Correlated Electrons (cond-mat.str-el)
arXiv:
2204.01995 [pdf]
PRC(2022)·12 citations
04
[Submitted on 5 Apr 2022]
Octupole correlations in collective excitations of neutron-rich $N \approx 56$ nuclei
Kosuke Nomura
Octupole correlations in the low-energy collective states of neutron-rich nuclei with the neutron number $N \approx 56$ are studied within the interacting boson model (IBM) that is based on the nuclear density functional theory. The constrained self-consistent mean-field (SCMF) calculations using a universal energy density functional and a pairing interaction provide the potential energy surfaces in terms of the axially-symmetric quadrupole and octupole deformations for the even-even nuclei $^{86 - 94}$ Se, $^{88 - 96}$ Kr, $^{90 - 98}$ Sr, $^{92 - 100}$ Zr, and $^{94 - 102}$ Mo. The SCMF energy surface is then mapped onto the energy expectation value of a version of the IBM in the boson condensate state, which consists of the neutron and proton monopole $s$ , quadrupole $d$ , and octupole $f$ bosons. This procedure determines the strength parameters of the IBM Hamiltonian, which is used to compute relevant spectroscopic properties. At the SCMF level, no octupole deformed ground state is obtained, while the energy surface is generally soft in the octupole deformation at $N \approx 56$ . The predicted negative-parity yrast bands with the bandhead state $3_{1}^{-}$ weakly depend on $N$ and become lowest in energy at $N = 56$ in each of the considered isotopic chains. The model further predicts finite electric octupole transition rates between the lowest negative- and the positive-parity ground-state bands.
Comments:
19 pages, 13 figures, 4 tables
Subjects:
Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
arXiv:
2204.02006 [pdf]
PRC(2022)·16 citations
05
[Submitted on 5 Apr 2022]
Effect of nucleon effective mass and symmetry energy on the neutrino mean free path in a neutron star
Parada T. P. Hutauruk🇰🇷 · Hana Gil🇰🇷 · Seung-il Nam🇰🇷 · Chang Ho Hyun🇰🇷
The Korea-IBS-Daegu-SKKU energy density functional (KIDS-EDF) models, constructed from the perturbative expansion of the energy density in nuclear matter, have been successfully and widely applied in describing the properties of finite nuclei and infinite nuclear matter. In the present work, we extend the applications of the KIDS-EDF models to investigate the implications of the nucleon effective mass and nuclear symmetry energy for the properties of neutron stars (NSs) and neutrino interaction with the NS constituent matter in the linear response approximation (LRA). At fixed neutrino energy and momentum transfer, we analyze the total differential cross section of neutrino, the neutrino mean free path (NMFP), and the NS mass-radius (M-R) relations. Remarkable results are given by the KIDS0-m*87 and SLy4 models, in which $M_{n}^{*} / M ≲ 1$ , and their NMFPs are quite higher in comparison with those obtained from the KIDS0, KIDS-A, and KIDS-B models, which result in $M_{n}^{*} / M ≳ 1$ . For the KIDS0, KIDS-A, and KIDS-B models, we obtain $λ ≲ R_{NS}$ , indicating that these models could predict the slow NS cooling and neutrino trapping in NSs. In contrast, the KIDS0-m*87 and SLy4 models yield $λ ≳ R_{NS}$ and thus we expect faster NS cooling and a small possibility of neutrino trapping within NSs. We also calculate the NMFP as a function of the neutrino energy and the nuclear matter density and find that the NMFP decreases as the density and neutrino energy increase, which is consistent with the result obtained in the Brussels-Montreal Skyrme (BSk17 and BSk18) models at saturation density.
Comments:
29 pages, 2 tables, 21 figures, published version
Subjects:
Nuclear Theory (nucl-th); High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics — Phenomenology (hep-ph)
arXiv:
2204.02061 [pdf]
PRC(2022)·17 citations
06
[Submitted on 5 Apr 2022]
Heavy baryons in hot stellar matter with light nuclei and hypernuclei
Tiago Custódio🇵🇹 · Helena Pais🇵🇹 · Constança Providência🇵🇹
The production of light nuclei and hypernuclei together with heavy baryons, both hyperons and $Δ$ -baryons, in low density matter as found in stellar environments such as supernova or binary mergers is studied within relativistic mean-field models. Five light nuclei were considered together with three light hypernuclei. The presence of both hyperons and $Δ$ -baryons shift the dissolution of clusters to larger densities and increase the abundance of clusters. This effect is larger the smaller the charge fraction and the higher the temperature. The couplings of the $Δ$ -baryons were chosen imposing that the nucleon effective mass remains finite inside neutron stars.
Comments:
11 pages, 8 figures, submitted to Phys. Rev. C
Subjects:
Nuclear Theory (nucl-th); High Energy Astrophysical Phenomena (astro-ph.HE)
arXiv:
2204.02260 [pdf]
PRC(2022)·2 citations
07
[Submitted on 5 Apr 2022]
Constraints from $Λ$ hypernuclei on the $Λ N N$ content of the $Λ$ -nucleus potential
E. Friedman🇮🇱 · A. Gal🇮🇱
A depth of $D_{Λ} \approx - 28$ MeV for the $Λ$ -nucleus potential was confirmed in 1988 by studying $Λ$ binding energies deduced from $(π^{+}, K^{+})$ spectra measured across the periodic table. Modern two-body hyperon-nucleon interaction models require additional interaction terms, most likely $Λ N N$ three-body terms, to reproduce $D_{Λ}$ . In this work we apply a suitably constructed $Λ$ -nucleus density dependent optical potential to binding energy calculations of observed $1 s_{Λ}$ and $1 p_{Λ}$ states in the mass range $12 \leq A \leq 208$ . The resulting $Λ N N$ contribution to $D_{Λ}$ , about 14 MeV repulsion at symmetric nuclear matter density $ρ_{0} = 0.17$ fm $^{- 3}$ , makes $D_{Λ}$ increasingly repulsive at $ρ ≳ 3 ρ_{0}$ , leading possibly to little or no $Λ$ hyperon content of neutron-star matter. This suggests in some models a stiff equation of state that may support two solar-mass neutron stars.
Comments:
v1: 5 pages, 3 figures, 1 table; v2: slightly corrected v1, submitted for publication; v3: 14 pages, 3 figures, 1 table, submitted elsewhere; v4: very minor stylistic changes, matches published version
Subjects:
Nuclear Theory (nucl-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
arXiv:
2204.02264 [pdf]
PLB(2023)·38 citations
08
[Submitted on 5 Apr 2022]
Splitting of elliptic flow in a tilted fireball
Tribhuban Parida🇮🇳 · Sandeep Chatterjee🇮🇳
The splitting of elliptic flow measured in different regions of the momentum space of produced hadrons has been recently studied in transport models and proposed as a sensitive probe of the angular momentum carried by the fireball produced in a relativistic heavy ion collision. The initial state angular momentum also gives rise to rapidity odd directed flow which has been measured. We consider a relativistic hydrodynamic framework with the initial matter distribution suitably calibrated to describe the observed directed flow and apply it to study the spilt in the elliptic flow. Our study suggests that the split in the elliptic flow is mostly driven by directed and triangular flows and may be used to constrain models of initial state rapidity distribution of matter in the fireball.
Subjects:
Nuclear Theory (nucl-th); High Energy Physics — Experiment (hep-ex); High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
arXiv:
2204.02345 [pdf]
PRC(2022)·11 citations
09
[Submitted on 5 Apr 2022]
Probing the nuclear deformation with three-particle asymmetric cumulant in RHIC isobar runs
Shujun Zhao🇨🇳 · Hao-jie Xu🇨🇳 · Yu-Xin Liu🇨🇳 · Huichao Song🇨🇳
$_{44}^{96}$ Ru+ $_{44}^{96}$ Ru and $_{40}^{96}$ Zr+ $_{40}^{96}$ Zr collisions at $s_{_{NN}} = 200$ GeV provide unique opportunities to study the geometry and fluctuations raised from the deformation of the colliding nuclei. Using iEBE-VISHNU hybrid model, we predict $ac_{2} {3}$ ratios between these two collision systems and demonstrate that the ratios of $ac_{2} {3}$ , as well as the ratios of the involving flow harmonics and event-plane correlations, are sensitive to quadrupole and octupole deformations, which could provide strong constrains on the shape differences between $^{96}$ Ru and $^{96}$ Zr. We also study the nonlinear response coefficients $χ_{4, 22}$ , which show insensitivity to the deformation effect.
Comments:
7 pages, 5 figures, published version
Subjects:
Nuclear Theory (nucl-th); Nuclear Experiment (nucl-ex)
arXiv:
2204.02387 [pdf]
PLB(2023)·35 citations
10
[Submitted on 4 Apr 2022] (cross-list from cond-mat.quant-gas)
Magnetic impurity in a one-dimensional few-fermion system
Lukas Rammelmüller · David Huber · Matija Čufar · Joachim Brand · Hans-Werner Hammer · Artem G. Volosniev
We present a numerical analysis of spin- $\frac{1}{2}$ fermions in a one-dimensional harmonic potential in the presence of a magnetic point-like impurity at the center of the trap. The model represents a few-body analogue of a magnetic impurity in the vicinity of an $s$ -wave superconductor. Already for a few particles we find a ground-state level crossing between sectors with different fermion parities. We interpret this crossing as a few-body precursor of a quantum phase transition, which occurs when the impurity `breaks' a Cooper pair. This picture is further corroborated by analyzing density-density correlations in momentum space. Finally, we discuss how the system may be realized with existing cold-atoms platforms.
Comments:
SciPost Submission
Subjects:
Quantum Gases (cond-mat.quant-gas); Superconductivity (cond-mat.supr-con); Nuclear Theory (nucl-th)
arXiv:
2204.01606 [pdf]
SciPost Phys.(2023)·9 citations
11
[Submitted on 4 Apr 2022] (cross-list from astro-ph.HE)
Quasi-stationary sequences of hyper massive neutron stars with exotic equations of state
Sanika Khadkikar · Chatrik Singh Mangat · Sarmistha Banik
In this work, we study the effect of differential rotation, finite temperature and strangeness on the quasi stationary sequences of hyper massive neutron stars (HMNS). We generate constant rest mass sequences of differentially rotating and uniformly rotating stars. The nucleonic matter relevant to the star interior is described within the framework of the relativistic mean field model with the DD2 parameter set. We also consider the strange $Λ$ hyperons using the BHB $Λ ϕ$ equation of state (EoS). Additionally, we probe the behaviour of neutron stars (NS) with these compositions at different temperatures. We report that the addition of hyperons to the EoS produces a significant boost to the spin-up phenomenon. Moreover, increasing the temperature can make the spin-up more robust. We also study the impact of strangeness and thermal effects on the T/W instability. Finally, we analyse equilibrium sequences of a NS following a stable transition from differential rotation to uniform rotation. The decrease in frequency relative to angular momentum loss during this transition is significantly smaller for EoS containing hyperons, compared to nucleonic EoS.
Comments:
Accepted for publication in the Journal of Astrophysics and Astronomy
Subjects:
High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Theory (nucl-th)
arXiv:
2204.01778 [pdf]
J.Astrophys.Astron.(2022)·1 citation
12
[Submitted on 5 Apr 2022] (cross-list from hep-ph)
Molecular states from $B ˉ^{(*)} N$ interactions
Zhong-Yi Jian🇨🇳 · Hong Qiang Zhu🇨🇳 · Feng Yang🇨🇳 · Qi-Hui Chen🇨🇳 · Yin Huang🇨🇳 · Jun He🇨🇳
In 2019, two new structures $Λ_{b} (6146)$ and $Λ_{b} (6152)$ were observed by the LHCb Collaboration at the invariant mass spectrum of $Λ_{b}^{0} π^{+} π^{-}$ , which aroused a hot discussion about their inner structures. The $Λ_{b} (6146)$ and $Λ_{b} (6152)$ might still be molecular states because their masses are close to threshold of a $B ˉ$ meson and a nucleon. In this work, we perform a systematical investigation of possible heavy baryonic molecular states from the $B ˉ N$ interaction. Since the $B ˉ N$ channel strongly couples to the $B ˉ^{*} N$ channel, the possible $B ˉ N - B ˉ^{*} N$ bound states are also studied. The interaction of the system considered is described by the $t$ -channel $σ$ , $π$ , $η$ , $ω$ , and $ρ$ mesons exchanges. By solving the non-relativistic Schrödinger equation with the obtained one-boson-exchange potentials, the $B ˉ^{(*)} N$ bound states with different quantum numbers are searched. The calculation suggests that recently observed $Λ_{b} (6146)$ can be assigned as a $P$ -wave $B ˉ N$ molecular state with spin parity $J^{P} = 3/ 2^{+}$ or a $B ˉ N - B ˉ^{*} N$ bound state. However, assignment of $Λ_{b} (6152)$ as an $F$ -wave $B ˉ N$ molecular is disfavored. The $Λ_{b} (6152)$ can be explained as meson-baryon molecular state with a small $B ˉ N$ component. The calculation also predict the existence of two $S$ -wave $B ˉ N - B ˉ^{*} N$ bound states that can be related to the experimentally observed $Λ_{b} (5912)$ and $Λ_{b} (5920)$ .
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2204.01961 [pdf]
EPJA(2023)·6 citations
13
[Submitted on 5 Apr 2022] (cross-list from hep-ph)
Parton energy loss at LHC tests for a strongly coupled medium
Sourendu Gupta🇮🇳 · Rishi Sharma🇮🇳
We construct a measure of transverse momentum loss of jets in nuclear collisions at LHC directly using measurements of jet cross sections in PbPb and pp collisions. The proposal is shown to be equivalent to R_AA and is equally straightforward to construct. Using data from the ATLAS collaboration at two different collision energies, we show that the proposed measure has small statistical uncertainties. We argue that systematic errors can be easily improved over our estimates by the experimental collaboration to such an extent that it directly probes whether the jet-medium interaction is due to a strongly interacting medium or a weakly interacting plasma. We argue that the current data may marginally favour a strongly interacting medium. On the other hand, assuming that the medium is weakly interacting, we are able to provide estimates of the jet quenching parameter qhat which are in rough agreement with previously reported estimates.
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2204.01998 [pdf]
0 citations
14
[Submitted on 5 Apr 2022] (cross-list from hep-ph)
Local and global polarization of $Λ$ hyperons across RHIC-BES energies: the roles of spin hall effect, initial condition and baryon diffusion
Xiang-Yu Wu🇨🇳 · Cong Yi🇨🇳 · Guang-You Qin🇨🇳 · Shi Pu🇨🇳
We perform a systematic study on the local and global spin polarization of $Λ$ and $Λ$ hyperons in relativistic heavy-ion collisions at beam energy scan energies via the (3+1)-dimensional CLVisc hydrodynamics model with AMPT and SMASH initial conditions. Following the quantum kinetic theory, we decompose the polarization vector as the parts induced by thermal vorticity, shear tensor and the spin Hall effect (SHE). We find that the polarization induced by SHE and the total polarization strongly depends on the initial conditions. At $7.7$ GeV, SHE gives a sizeable contribution and even flips the sign of the local polarization along the beam direction for AMPT initial condition, which is not observed for SMASH initial condition. Meanwhile, the local polarization along the out-of-plane direction induced by SHE with AMPT initial condition does not always increase with decreasing collision energies. Next, we find that the polarization along the beam direction is sensitive to the baryon diffusion coefficient, but the local polarization along the out-of-plane direction is not. Our results for the global polarization of $Λ$ and $Λ$ agree well with the STAR data. Interestingly, the global polarization of $Λ$ is not always larger than that of $Λ$ due to various competing effects. Our findings are helpful for understanding the polarization phenomenon and the detailed structure of quark-gluon plasma in relativistic heavy-ion collisions.
Comments:
13 pages, 8 figures
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2204.02218 [pdf]
PRC(2022)·78 citations
15
[Submitted on 5 Apr 2022] (cross-list from cond-mat.mes-hall)
Molecular formations and spectra due to electron correlations in three-electron hybrid double-well qubits
Constantine Yannouleas🇺🇸 · Uzi Landman🇺🇸
We show that systematic full configuration-interaction (FCI) calculations enable prediction of the energy spectra and the intrinsic spatial and spin structures of the many-body wave functions as a function of the detuning parameter for the case of three-electron hybrid qubits based on GaAs asymmetric double quantum dots. Specifically, in comparison with the case of weak interactions and treating the entire three-electron double-dot hybrid qubit as an integral unit, it is shown that the predicted spectroscopic patterns, originating from strong electron correlations, manifest the formation of Wigner molecules (WMs). Signatures of WM formation include: (1) a strong suppression of the energy gaps relative to the non-interacting-electrons modeling, and (2) the appearance of a pair of avoided crossings arising between states associated with two-electron occupancies in the left and right wells. The Wigner molecule is a physical entity associated with electron localization within each well and it cannot be captured by the previously employed independent-particle or two-site-Hubbard theoretical modeling of the hybrid qubits. The emergence of strong WMs is investigated in depth through the concerted use of FCI-adapted diagnostic tools like charge and spin densities, as well as conditional probability distributions. Furthermore, the energy spectrum as a function of the strength of the Coulomb repulsion (at constant detuning) is calculated in order to complement the thorough analysis of the factors contributing to WM emergence. We report remarkable agreement with recent experimental measurements. The present FCI methodology for multi-well quantum dots can be straightforwardly extended to treat valleytronic two-band Si/SiGe hybrid qubits, where the central role of the WMs was confirmed recently.
Comments:
Published version. 16 pages with 9 color figures. For related publications, see https://sites.gatech.edu/cyannouleas/about/
Subjects:
Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Nuclear Theory (nucl-th); Quantum Physics (quant-ph)
arXiv:
2204.02243 [pdf]
PRB(2022)·14 citations
16
[Submitted on 5 Apr 2022] (cross-list from hep-ph)
Three-body molecules $D ˉ D ˉ^{*} Σ_{c}$ - understanding the nature of $T_{cc}$ , $P_{c} (4312)$ , $P_{c} (4440)$ and $P_{c} (4457)$
Ya-Wen Pan🇨🇳 · Tian-Wei Wu🇨🇳 · Ming-Zhu Liu🇨🇳 · Li-Sheng Geng🇨🇳
The nature of the three pentaquark states, $P_{c} (4312)$ , $P_{c} (4440)$ and $P_{c} (4457)$ , discovered by the LHCb Collaboration in 2019, is still under debate, although the $D ˉ^{(*)} Σ_{c}$ molecular interpretation seems to be the most popular. In this work, by adding a $D ˉ$ meson into the $D ˉ^{*} Σ_{c}$ pair, we investigate the mass and decay width of the three-body molecules $D ˉ D ˉ^{*} Σ_{c}$ and explore the correlation between the existence of the $D ˉ D ˉ^{*} Σ_{c}$ molecules with the existence of $D ˉ^{(*)} Σ_{c}$ and $D ˉ^{*} D ˉ$ two-body molecules. The latter can be identified with the doubly charmed tetraquark state $T_{cc}$ recently discovered by the LHCb Collaboration. Based on the molecular nature of $P_{c} (4312)$ , $P_{c} (4440)$ , $P_{c} (4457)$ , and $T_{cc}$ , our results indicate that there exist two three-body bound states of $D ˉ D ˉ^{*} Σ_{c}$ with $I (J^{P}) = 1 (1/ 2^{+})$ and $I (J^{P}) = 1 (3/ 2^{+})$ , and binding energies $37.24$ MeV and $29.63$ MeV below the $D ˉ D ˉ^{*} Σ_{c}$ mass threshold. In addition, we find that the mass splitting of these two three-body molecules are correlated to the mass splitting of $P_{c} (4440)$ and $P_{c} (4457)$ , which offers a non-trivial way to reveal the molecular nature of these states. The partial widths of two $D ˉ D ˉ^{*} Σ_{c}$ molecules decaying into $J / ψ p D ˉ$ and $J / ψ p D ˉ^{*}$ are found to be several MeV. We recommend the experimental searches for the $D ˉ D ˉ^{*} Σ_{c}$ molecules in the $J / ψ p D ˉ$ and $J / ψ p D ˉ^{*}$ invariant mass distributions.
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2204.02295 [pdf]
PRD(2022)·16 citations
17
[Submitted on 5 Apr 2022] (cross-list from hep-ph)
Anisotropic tomography of heavy quark dissociation by using general propagator structure at finite magnetic field
Ritesh Ghosh🇮🇳 · Aritra Bandyopadhyay🇨🇳 · Indrani Nilima🇮🇳 · Sabyasachi Ghosh🇮🇳
In this work we have explored the imaginary part of the Heavy Quark (HQ) potential and subsequently the dissociation of heavy quarkonia at finite temperature and magnetic field. With respect to earlier investigations on this topic, present work contain three new ingredients. First one is considering all Landau level summation, for which present work can be applicable in entire magnetic field domain - from weak to strong. Second one is the general structure of the gauge boson propagator in a hot magnetized medium, which is used here in heavy quark potential problem first time. Third one is a rich anisotropic structure of the complex heavy quark potential, which explicitly depends on the longitudinal and transverse distance. By comparing with earlier references, we have attempted to display our new contributions by plotting heavy quark potential tomography and dissociation probability at finite temperature and magnetic field.
Comments:
27 pages, 9 figures
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2204.02312 [pdf]
PRD(2022)·21 citations
18
[Submitted on 5 Apr 2022] (cross-list from hep-ph)
Heavy quark potential and LQCD based quark condensate at finite magnetic field
Indrani Nilima🇮🇳 · Aritra Bandyopadhyay🇨🇳 · Ritesh Ghosh🇮🇳 · Sabyasachi Ghosh🇮🇳
In the present work, we have studied heavy quarkonia potential in hot and magnetized quark gluon plasma. Inverse magnetic catalysis (IMC) effect is incorporated within the system through the magnetic field modified Debye mass by modifying the effective quark masses. We have obtained the real and imaginary part of the heavy quark potential in this new scenario. After the evaluation of the binding energy and the decay width we comment about the dissociation temperatures of the heavy quarkonia in presence of magnetic field.
Comments:
16 pages, 7 figures
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2204.02388 [pdf]
EPJC(2023)·17 citations

Affiliations

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