The Lorentz-violating real scalar field at thermal equilibrium

Abstract

In this paper we study Lorentz-Violation(LV) effects on the thermodynamics properties of a real scalar field theory due to the presence of a constant background tensor field. In particular, we analyse and compute explicitly the deviations of the internal energy, pressure, and entropy of the system at thermal equilibrium due to the LV contributions. For the free massless scalar field we obtain exact results, whereas for the massive case we perform approximated calculations. Finally, we consider the self interacting ${\varphi }^4$ theory, and perform perturbative expansions in the coupling constant for obtaining relevant thermodynamics quantities.

arXiv comment26 pages, 1 figure

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