Zero- and Finite-Temperature Casimir Effect in a Fracton Gauge Field
Abstract
We investigate the zero- and finite-temperature Casimir interaction of the free trace-full scalar-charge fracton gauge field between two parallel reflecting boundaries. A variational analysis determines a consistent boundary-value problem that confines all five physical polarizations of the rank-two field. The spectrum separates into three faster and two slower propagating modes. At zero temperature, the vacuum interaction weights the modes by their propagation speeds; when the fast-branch speed is set equal to the speed of light, the resulting Casimir pressure is approximately 2.21 times the ideal electromagnetic value. At finite temperature, the two branches acquire different thermal weights and generate a split crossover. The normalized free energy and pressure follow distinct crossover profiles but approach the same classical high-temperature ratio of 2.5 relative to ideal electromagnetism, because the Matsubara zero mode counts the five confined polarizations independently of their propagation speeds. We derive the exact thermal interaction, its low- and high-temperature limits, and the dependence of the crossover scale on the effective gauge-field velocity. The transition from velocity-weighted quantum fluctuations to classical mode counting provides a direct spectral signature of the multi-branch structure of the higher-rank gauge field.
Related
- Boundaries and defects in conformal field theories at finite temperature
- The pinning-field line defect at finite temperature
- High-temperature expansion of the inverse-square Ising chain in a magnetic field: exact coefficients and finite-size reconstruction
- IDMate: Finite-temperature error bounds for window-resolved self-consistent-field screening
- Finite-Temperature Equations of State for Neutron-Star Mergers within the Quark Mean-Field Model
BibTeX
@misc{muniz2026zero,
title = {{Zero- and Finite-Temperature Casimir Effect in a Fracton Gauge Field}},
author = {Celio R. Muniz},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.16263},
eprint = {2609.16263},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.16263},
}
RIS
TY - UNPB
TI - Zero- and Finite-Temperature Casimir Effect in a Fracton Gauge Field
AU - Celio R. Muniz
PY - 2026
DA - 2026/09/14
PB - arXiv
DO - 10.48550/arxiv.2609.16263
UR - https://arxiv.org/abs/2609.16263
AB - We investigate the zero- and finite-temperature Casimir interaction of the free trace-full scalar-charge fracton gauge field between two parallel reflecting boundaries. A variational analysis determines a consistent boundary-value problem that confines all five physical polarizations of the rank-two field. The spectrum separates into three faster and two slower propagating modes. At zero temperature, the vacuum interaction weights the modes by their propagation speeds; when the fast-branch speed is set equal to the speed of light, the resulting Casimir pressure is approximately 2.21 times the ideal electromagnetic value. At finite temperature, the two branches acquire different thermal weights and generate a split crossover. The normalized free energy and pressure follow distinct crossover profiles but approach the same classical high-temperature ratio of 2.5 relative to ideal electromagnetism, because the Matsubara zero mode counts the five confined polarizations independently of their propagation speeds. We derive the exact thermal interaction, its low- and high-temperature limits, and the dependence of the crossover scale on the effective gauge-field velocity. The transition from velocity-weighted quantum fluctuations to classical mode counting provides a direct spectral signature of the multi-branch structure of the higher-rank gauge field.
ER -