Nuclear Theory·nucl-th

Wednesday·November 29, 2023

10 papers—5 primary·5 cross-listed

06
[Submitted on 27 Nov 2023] (cross-list from hep-th)
Quantum-classical simulation of quantum field theory by quantum circuit learning
Kazuki Ikeda🇺🇸
We employ quantum circuit learning to simulate quantum field theories (QFTs). Typically, when simulating QFTs with quantum computers, we encounter significant challenges due to the technical limitations of quantum devices when implementing the Hamiltonian using Pauli spin matrices. To address this challenge, we leverage quantum circuit learning, employing a compact configuration of qubits and low-depth quantum circuits to predict real-time dynamics in quantum field theories. The key advantage of this approach is that a single-qubit measurement can accurately forecast various physical parameters, including fully-connected operators. To demonstrate the effectiveness of our method, we use it to predict quench dynamics, chiral dynamics and jet production in a 1+1-dimensional model of quantum electrodynamics. We find that our predictions closely align with the results of rigorous classical calculations, exhibiting a high degree of accuracy. This hybrid quantum-classical approach illustrates the feasibility of efficiently simulating large-scale QFTs on cutting-edge quantum devices.
Subjects:
High Energy Physics — Theory (hep-th); Machine Learning (cs.LG); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th); Quantum Physics (quant-ph)
arXiv:
2311.16297 [pdf]
Annalen Phys.(2025)·1 citation
07
[Submitted on 28 Nov 2023] (cross-list from hep-ph)
A unified description of DGLAP, CSS, and BFKL: TMD factorization bridging large and small x
Swagato Mukherjee🇺🇸 · Vladimir V. Skokov🇺🇸 · Andrey Tarasov🇺🇸 · Shaswat Tiwari🇺🇸
This paper introduces a transverse-momentum dependent (TMD) factorization scheme designed to unify both large and small Bjorken-x regimes. We compute the next-to-leading order (NLO) quantum chromodynamics (QCD) corrections to the gluon TMD operator for an unpolarized hadron within this proposed scheme. This leads to the emergence of a new TMD evolution, incorporating those in transverse momentum, rapidity, and Bjorken-x. When matched to the collinear factorization scheme, our factorization scheme faithfully reproduces the well-established Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) and Collins-Soper-Sterman (CSS) evolutions. Conversely, matching with high-energy factorization not only yields the Balitsky-Fadin-Kuraev-Lipatov (BFKL) evolution but also reveals distinctive signatures of CSS logarithms. The development of this novel TMD factorization scheme, capable of seamlessly reconciling disparate Bjorken-x regimes and faithfully reproducing established QCD evolution equations, has the potential to significantly advance our comprehension of high-energy processes and three-dimensional parton structures of hadrons.
Comments:
38 pages, 7 figures; v2: Published version
Subjects:
High Energy Physics — Phenomenology (hep-ph); High Energy Physics — Experiment (hep-ex); High Energy Physics — Lattice (hep-lat); High Energy Physics — Theory (hep-th); Nuclear Theory (nucl-th)
arXiv:
2311.16402 [pdf]
PRD(2024)·36 citations
08
[Submitted on 28 Nov 2023] (cross-list from quant-ph)
Is gauge symmetry vacuous or physical ? : Lessons from the Landau problem as a solvable quantum gauge theoretical system
Masashi Wakamatsu🇯🇵
The gauge symmetry is one of the most important concepts in modern physics, but there are two conflicting views on its meaning or interpretation. The standard view is that local gauge symmetry is the basis of the pursue of fundamental particles and forces in nature. Another view is that the gauge symmetry is not a symmetry of nature but just a redundancy in description. Naturally, both statements are nothing wrong, but one might feel that there is a slight conceptual conflict between the two points of view. Due to the subtlety of the subject, however, little literature exists that discusses the root of such an anxiety. In the present paper, by making full use of the analytically solvable nature of the quantum Landau problem, we argue that the familiar gauge principle plays a critical role in unraveling a subtle mismatch between the two viewpoints above. We reveal that there exist two types of quantities in gauge theories, which should clearly be discriminated. The first are quantities, which look seemingly gauge-invariant but actually not, whereas the second are genuinely gauge-invariant quantities, which correspond to direct experimental observables.
Comments:
Title was changed, and the explanation was refined
Subjects:
Quantum Physics (quant-ph); High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2311.16537 [pdf]
0 citations
09
[Submitted on 28 Nov 2023] (cross-list from gr-qc)
Cost of inferred nuclear parameters towards the f-mode dynamical tide in binary neutron stars
Bikram Keshari Pradhan · Tathagata Ghosh · Dhruv Pathak · Debarati Chatterjee
Gravitational Wave (GW) observations from Neutron Stars (NS) in a binary system provide an excellent scenario to constrain the nuclear parameters. The investigation of Pratten et al. (2022) has shown that the ignorance of f-mode dynamical tidal correction in the GW waveform model of the binary neutron star (BNS) system can lead to substantial bias in the measurement of NS properties and NS equations of state (EOS). In this work, we investigate the bias in the nuclear parameters resulting from the ignorance of dynamical tidal correction. In addition, this work demonstrates the sensitivity of the nuclear parameters and the estimated constraints on them from future GW observations. We infer the nuclear parameters from GW observations by describing the NS matter within the relativistic mean field model. For a population of GW events, we notice that the ignorance of dynamical tide predicts a lower median for nucleon effective mass ( $m^{*}$ ) by $\sim 6%$ compared to the scenario when dynamical tidal correction is considered. Whereas at a 90\% credible interval(CI), $m^{*}$ gets constrained up to $\sim 5%$ and $\sim 3%$ in A+ (the LIGO-Virgo detectors with a sensitivity of 5th observing run) and Cosmic Explorer (CE) respectively. We also discuss the resulting constraints on all other nuclear parameters, including compressibility, symmetry energy, and slope of symmetry energy, considering an ensemble of GW events. We do not notice any significant impact in analyzing nuclear parameters other than $m^{*}$ due to the ignorance of f-mode dynamical tides.
Comments:
12 pages, 6 figures, 1 table
Subjects:
General Relativity and Quantum Cosmology (gr-qc); High Energy Astrophysical Phenomena (astro-ph.HE); Nuclear Theory (nucl-th)
arXiv:
2311.16561 [pdf]
ApJ(2024)·16 citations
10
[Submitted on 28 Nov 2023] (cross-list from hep-ph)
New insights into the doubly charmed exotic mesons
Di Guo🇨🇳 · Qin-He Yang🇨🇳 · Ling-Yun Dai🇨🇳 · A. P. Szczepaniak🇺🇸
Using effective Lagrangians constrained by the heavy quark spin symmetry and chiral symmetry, for the light quarks, we analyze the $D^{0} D^{0} π^{+}$ , $D ˉ^{0} D^{0} π^{0}$ and $D^{0} D ˉ^{* 0}$ invariant mass spectra. Performing a simultaneous analysis of the doubly charmed and charm-anti-charm states gives further insights into the nature of the $T_{cc}^{+}$ and $χ_{c 1}^{0} (3872)$ , exotic hadrons. It is confirmed that both states should lie below their respective $D D^{*}$ / $D D ˉ^{*}$ thresholds. Also, the contributions of the triangle and box diagrams are negligible.
Comments:
6 pages, 5 figures
Subjects:
High Energy Physics — Phenomenology (hep-ph); Nuclear Theory (nucl-th)
arXiv:
2311.16938 [pdf]
EPJC(2025)·5 citations

Affiliations

first authorsco-authorsvia INSPIRE

Quantum-classical simulation of quantum field theory by quantum circuit learning

A unified description of DGLAP, CSS, and BFKL: TMD factorization bridging large and small x

Is gauge symmetry vacuous or physical ? : Lessons from the Landau problem as a solvable quantum gauge theoretical system

Cost of inferred nuclear parameters towards the f-mode dynamical tide in binary neutron stars

New insights into the doubly charmed exotic mesons

Affiliations