Nuclear Theory·nucl-th

Tuesday·March 11, 2025

17 papers—8 primary·9 cross-listed

09
[Submitted on 6 Mar 2025] (cross-list from hep-th)
Quantum energies of solitons with different topological charges
N. Graham🇺🇸 · H. Weigel🇿🇦
The vacuum polarization energy is the leading quantum correction to the classical energy of a soliton. We study this energy for two-component solitons in one space dimension as a function of the soliton's topological charge. We find that both the classical and the vacuum polarization energies are linear functions of the topological charge with a small offset. Because the combination of the classical and quantum offsets determines the binding energies, either all higher charge solitons are energetically bound or they are all unbound, depending on model parameters. This linearity persists even when the field configurations are very different from those of isolated solitons, and would not be apparent from an analysis of their bound state spectra alone.
Comments:
14 pages, 8 figures, in line with journal version; v3: correct grant number
Subjects:
High Energy Physics — Theory (hep-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2503.04458 [pdf]
PRD(2025)·1 citation
10
[Submitted on 7 Mar 2025] (cross-list from hep-ph)
Study of deeply virtual Compton scattering at the future Electron-Ion Collider
Elke-Caroline Aschenauer🇺🇸 · Varvara Batozskaya🇵🇱 · Salvatore Fazio🇮🇹 · Alexander Jentsch🇺🇸 · Jihee Kim🇺🇸 · Krešimir Kumerički🇭🇷 · Herve Moutarde🇫🇷 · Kornelija Passek-K.🇭🇷 · Daria Sokhan🇬🇧 · Hubert Spiesberger🇩🇪 · Paweł Sznajder🇵🇱 · Kemal Tezgin🇺🇸
This study presents the impact of future measurements of deeply virtual Compton scattering (DVCS) with the ePIC detector at the electron-ion collider (EIC), currently under construction at Brookhaven National Laboratory. The considered process is sensitive to generalized parton distributions (GPDs), the understanding of which is a cornerstone of the EIC physics programme. Our study marks a milestone in the preparation of DVCS measurements at EIC and provides a reference point for future analyses. In addition to presenting distributions of basic kinematic variables obtained with the latest ePIC design and simulation software, we examine the impact of future measurements on the understanding of nucleon tomography and DVCS Compton form factors, which are directly linked to GPDs. We also assess the impact of radiative corrections and background contribution arising from exclusive $π^{0}$ production.
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2503.05908 [pdf]
PRD(2025)·10 citations
11
[Submitted on 7 Mar 2025] (cross-list from hep-ph)
Hadron Structure: Perspective and Insights
Daniele Binosi🇨🇳 · Craig D. Roberts🇨🇳 · Zhao-Qian Yao🇨🇳
The bulk of visible mass is supposed to emerge from nonperturbative dynamics within quantum chromodynamics (QCD) -- the strong interaction sector of the Standard Model. Following years of development and refinement, continuum and lattice Schwinger function methods have recently joined in revealing the three pillars that support this emergent hadron mass (EHM); namely, a nonzero gluon mass-scale, a process-independent effective charge, and dressed-quarks with constituent-like masses. One may argue that EHM and confinement are inextricably linked; and theory is now working to expose their manifold expressions in hadron observables and highlight the types of measurements that can be made in order to validate the paradigm. This contribution sketches the role played by EHM in shaping hadron electromagnetic and gravitational form factors, exciting nucleon resonances, and moulding hadron parton distributions.
Comments:
23 pages, 6 figures. Summary of a plenary presentation at QCHSC24, the XVIth Quark Confinement and the Hadron Spectrum Conference, 19-24 August, 2024, Cairns Convention Centre, Cairns, Queensland, Australia
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); High Energy Physics — Lattice (hep-lat); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2503.05984 [pdf]
PoS(2025)·5 citations
12
[Submitted on 8 Mar 2025] (cross-list from hep-th)
Transport and response coefficients in second-order dissipative relativistic hydrodynamics with quantum corrections: probing the quark-gluon plasma
I. Kuntz🇧🇷 · R. da Rocha🇧🇷
A functional measure encompasses quantum corrections and is explored in the fluid/gravity correspondence. Corrections to response and transport coefficients in the second-order dissipative relativistic hydrodynamics are proposed, including the ones to the pressure, the relaxation time, and the shear relaxation. Their dependence on the quark-gluon plasma (QGP) temperature sets a temperature dependence on the running parameter encoding the one-loop quantum gravity correction, driven by a functional measure. The experimental range of the bulk viscosity-to-entropy density ratio of the QGP corroborates the existence of the functional measure.
Comments:
30 pages, 10 figures
Subjects:
High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
arXiv:
2503.06207 [pdf]
Entropy(2025)·0 citations
13
[Submitted on 9 Mar 2025] (cross-list from hep-th)
Revisiting interpolating flows in $(1 + 1)$ hydrodynamics
Aritra Banerjee🇮🇳 · Abir Ghosh🇮🇳
We revisit the general analytic solution space for relativistic $(1 + 1)$ -dimensional hydrodynamics for a perfect fluid flowing along the longitudinal direction. We work out the explicit one-parameter family of interpolating flows between boost-invariant and boost-non-invariant regimes, where a direct and simple dialing of the parameter at the level of solutions is possible. We also discuss the construction of generalised rapidity distribution of entropy for such interpolating flows at the level of potentials.
Comments:
15 pages, 2 figures
Subjects:
High Energy Physics — Theory (hep-th); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2503.06543 [pdf]
PRD(2025)·0 citations
14
[Submitted on 9 Mar 2025] (cross-list from cond-mat.str-el)
Non-hermitian Green's function theory with $N$ -body interactions: the coupled-cluster similarity transformation
Christopher J. N. Coveney · David P. Tew
We present the diagrammatic theory of the irreducible self-energy and Bethe-Salpeter kernel that naturally arises within the Green's function formalism for a general $N$ -body non-hermitian interaction. In this work, we focus specifically on the coupled-cluster self-energy generated by the similarity transformation of the electronic structure Hamiltonian. We develop the biorthogonal quantum theory to construct dynamical correlation functions where the time-dependence of operators is governed by a non-hermitian Hamiltonian. We extend the Gell-Mann and Low theorem to include non-hermitian interactions and to generate perturbative expansions of many-body Green's functions. We introduce the single-particle coupled-cluster Green's function and derive the perturbative diagrammatic expansion for the non-hermitian coupled-cluster self-energy in terms of the `non-interacting' reference Green's function, $Σ ~ [G_{0}]$ . From the exact equation-of-motion of the single-particle coupled-cluster Green's function, we derive the self-consistent renormalized coupled-cluster self-energy, $Σ ~ [G ~]$ , and demonstrate its relationship to the perturbative expansion of the self-energy, $Σ ~ [G_{0}]$ . Subsequently, we show that the usual electronic self-energy can be recovered from the coupled-cluster self-energy by neglecting the effects of the similarity transformation. We show how the coupled-cluster ground state energy can be obtained from the coupled-cluster self-energy and provide an overview of the relationship between approximations for the coupled-cluster self-energy, IP/EA-EOM-CC and the $G_{0} W_{0}$ approximation. As a result, we introduce the CC- $G_{0} W_{0}$ self-energy by leveraging the connections between Green's function and coupled-cluster theory. Finally, we derive the diagrammatic expansion of the coupled-cluster Bethe-Salpeter kernel.
Subjects:
Strongly Correlated Electrons (cond-mat.str-el); cond-mat.mtrl-sci (cond-mat.mtrl-sci); Nuclear Theory (nucl-th); physics.chem-ph (physics.chem-ph); Quantum Physics (quant-ph)
arXiv:
2503.06586 [pdf]
PRResearch(2026)·5 citations
15
[Submitted on 9 Mar 2025] (cross-list from hep-ph)
Quasi-Classical Approximation of Electromagnetic Radiation by Fermions embedded in Rigidly Rotating Medium in Strong Magnetic Field
Matteo Buzzegoli🇷🇴 · Kirill Tuchin🇺🇸 · Nandagopal Vijayakumar🇺🇸
We develop the quasi-classical (WKB) approximation of the synchrotron radiation by a fermion embedded into uniformly rotating system in external magnetic field. We show that it gives an accurate approximation of the exact expression that we recently obtained at a tiny fraction of the numerical cost. Our results can be used to compute the electromagnetic radiation of the quark-gluon plasma produced in relativistic heavy-ion collisions.
Comments:
13 pages, 4 figures
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
arXiv:
2503.06649 [pdf]
PRC(2025)·5 citations
16
[Submitted on 10 Mar 2025] (cross-list from nucl-ex)
Novel concept for low-energy antineutron production and its application for antineutron scattering experiments
Alessandra Filippi🇮🇹 · Hiroyuki Fujioka🇯🇵 · Takashi Higuchi🇯🇵 · Luca Venturelli🇮🇹
Extensive data of antiproton scattering cross sections with protons and nuclei have advanced our understanding of hadronic interactions with antinucleons. However, low-energy antineutron scattering data are scarce, thereby limiting our understanding of the S-wave antinucleon-nucleon and antinucleon-nucleus interactions. We present a novel production scheme of extremely low-energy antineutrons that could remedy this situation. This method is based on backward charge-exchange reaction ( $p p ˉ \to n n ˉ$ ), and can reach the lowest momentum of 9 MeV/c, which would be well suited to study of the S-wave antinucleon-nucleon or antinucleon-nucleus interactions.
Comments:
7 pages, 3 figures
Subjects:
Nuclear Experiment (nucl-ex); High Energy Physics — Experiment (hep-ex); Nuclear Theory (nucl-th); Instrumentation and Detectors (physics.ins-det)
arXiv:
2503.06972 [pdf]
5 citations
17
[Submitted on 10 Mar 2025] (cross-list from hep-ph)
Parton distribution functions of ground state mesons composed of $c$ or $b$ quarks
Qian Wu🇨🇳 · Zhu-Fang Cui🇨🇳 · Jorge Segovia🇪🇸
The valence quark parton distribution functions (PDFs) of all ground state heavy mesons that composed of $b$ or $c$ quarks, are discussed; namely, the pseudoscalar $η_{c} (1 S)$ , $η_{b} (1 S)$ and $B_{c}$ , together with the corresponding vector ones, $J / ψ$ , $Υ (1 S)$ and $B_{c}^{*}$ . We use a QCD-inspired constituent quark model, which has been applied with success to conventional heavy mesons, so that one advantage here is that all parameters have already been fixed by previous studies. The wave functions of the heavy mesons in the rest frame are obtained by solving the Schrödinger equation, then boosted to its light-front based on Susskind's Lorentz transformation. The PDFs at the hadron scale, are then obtained by integrating out the transverse momenta of the modulus square of the light-front wave function. Our study shows how the valence quark distributions differ between pseudoscalar and vector mesons, as well as among charmonia, bottomonia and bottom-charmed mesons. Comparisons with other theoretical calculations demonstrate that the PDFs obtained herein are in general narrower but align well with the expected patterns. Moreover, each PDF's point-wise behavior is squeezed with respect to the scale-free parton-like PDF.
Comments:
9 pages, 7 figures, 4 table
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
arXiv:
2503.07055 [pdf]
PRD(2025)·4 citations

Affiliations

first authorsco-authorsvia INSPIRE