PaperPanorama
FAQ

Nuclear Theory·nucl-th

Wednesday·November 5, 2025

6 papers—3 primary·3 cross-listed

All6Primary3Cross-lists3
  1. 04

    Entanglement asymmetry in gauge theories: chiral anomaly in the finite temperature massless Schwinger model

    Adrien Florio🇩🇪 · Sara Murciano🇫🇷

    The entanglement asymmetry has emerged in recent years as a practical quantity to study phases of matter. We present the first study of entanglement asymmetry in gauge theories by considering the chiral anomaly of the analytically solvable massless Schwinger model at both zero and finite temperatures. At zero temperature, we find the asymmetry exhibits logarithmic growth with system size. At finite temperature, we show that it is parametrically more sensitive to chiral symmetry-breaking than the corresponding local order parameter: while the chiral condensate decays exponentially, the asymmetry decreases only logarithmically. This establishes the entanglement asymmetry as a promising tool to probe (finite-temperature) phase transitions in gauge theories.

    ↳ hep-thcond-mat.stat-mechhep-phnucl-th+1PRD(2026)·11 citations
  2. 05

    Incoherent Particle Production in Ultraperipheral Heavy Ion Collisions

    L. A. Harland-Lang🇬🇧

    In this paper, we present the first complete treatment of incoherent photon-initiated production in ultraperipheral heavy ion collisions, focussing on the dilepton and diphoton final states. In the former case we compare to the ATLAS measurement of dielectron production and find that our predictions match the data very well. In the latter case we show that this contribution is too small to explain the observed broad in diphoton acoplanarity background to the purely coherent light-by-light scattering signal. We in addition consider a new `quark emission' topology, which while naively might be expected to dominate the incoherent diphoton production channel, is in fact found to be kinematically suppressed. Finally, we revisit QCD-initiated diphoton production and issue of theoretical uncertainties in this case. We find that this again cannot explain the observed size of the higher acoplanarity background. The production mechanism leading to this background to light-by-light production, and the reason for its observed enhancement in comparison to the dilepton case, therefore remains unclear.

    ↳ hep-phhep-exnucl-exnucl-thPRD(2026)·0 citations
  3. 06

    Magnetic-type Love number differentiating quark stars from neutron stars

    Kenji Fukushima🇯🇵 · Josuke Minamiguchi🇯🇵 · Tomoya Uji🇯🇵

    The quark star (QS) is a hypothetical and yet undiscovered stellar object, and its existence would mark a paradigm shift in research on nuclear and quark matter. Although compactness is a well-known signature for distinguishing between two branches of QSs and neutron stars (NSs), some QSs can overlap with NSs in the radius-mass plane. To manifest their evident differences, we investigate the tidal properties of QSs and NSs. We then find that the magnetic-type Love number is a robust indicator for differentiating between QSs and NSs, whereas the electric-type one is insufficient when QSs and NSs have similar masses and radii. Finally, we show that gravitational waves from binary star mergers can be sensitive to differences between QSs and NSs to the detectable level.

    ↳ astro-ph.HEnucl-th1 citation

Affiliations

first authorsco-authorsvia INSPIRE