Year: 2026
Type: preprint
Abstract: We study interacting relativistic charged bosons at finite temperature and isospin density in a thermodynamically consistent mean-field approach with repulsive phi-4 and phi-6 interactions. The thermodynamics is formulated in an Extended Canonical Ensemble, in which the conserved isospin density, not the chemical potential, is the independent variable. This is essential in the condensed phase, where mu_I is fixed by condensation. With one constant fitted to the lattice pressure at T=120 MeV, the model reproduces the lattice isospin density, energy density, and trace anomaly, phi-6 being more accurate.
Source: arXiv (Cornell University)
Institution: Bogolyubov Institute for Theoretical Physics
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G5206891976
OpenAlex ID: W7213918992