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Nuclear Theory·nucl-th

Friday·January 23, 2026

4 papers—2 primary·2 cross-listed

All4Primary2Cross-lists2
  1. 03

    Decay Effect on Near-Threshold Mass Scaling with Complex and Coupled-Channel Potentials

    Erick Gushiken🇯🇵 · Tetsuo Hyodo🇯🇵

    We investigate the effect of decay channels on the near-threshold mass scaling by employing potential models. By varying the attractive strength of a square-well potential, we examine the pole trajectory associated with the transition of an -wave bound state into a resonance state, incorporating decay-channel effects through both a single-channel complex potential model and a coupled-channel real potential model. As a result, we show that the pole of a quasibound state below the threshold is not continuously connected to that of a resonance state above the threshold. Furthermore, by comparing the results obtained from the single-channel and coupled-channel models, we clarify the correspondence between the pole trajectories in the two approaches.

    ↳ hep-phnucl-th0 citations
  2. 04

    String Breaking and Glueball Dynamics in D Quantum Link Electrodynamics

    Jiahao Cao🇩🇪 · Rohan Joshi🇩🇪 · Yizhuo Tian🇩🇪 · N. S. Srivatsa🇩🇪 · Jad C. Halimeh🇩🇪

    At the heart of quark confinement and hadronization, the physics of flux strings has recently become a focal point in the field of quantum simulation of high-energy physics (HEP). Despite considerable progress, a detailed understanding of the behavior of flux strings in quantum simulation-relevant lattice formulations of gauge theories has remained limited to the lowest truncations of the gauge field, which are severely limited in their ability to draw conclusions about the quantum field theory limit. Here, we employ tensor network simulations to investigate the behavior of flux strings in a quantum link formulation of D quantum electrodynamics (QED) with a spin- representation of the gauge field. We first map out the ground-state phase diagram of this model in the presence of two spatially separated static charges, revealing distinct microscopic processes responsible for string breaking, including a two-stage breaking mechanism not possible in the spin- formulation. Starting in different initial product state string configurations, we then explore far-from-equilibrium quench dynamics across various parameter regimes, demonstrating genuine D real-time string breaking and glueball-like bound state formation, with the latter not possible in the spin- formulation. In and out of equilibrium, we consider different values and placements of the static charges. Finally, we provide efficient qudit circuits for a quantum simulation experiment in which our results can be observed in state-of-the-art ion-trap setups. Our findings lay the groundwork for quantum simulations of flux strings towards the quantum field theory limit.

    ↳ hep-latcond-mat.quant-gasnucl-thquant-ph11 citations

Affiliations

first authorsco-authorsvia INSPIRE