The Lorentz-violating real scalar field at thermal equilibrium

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...

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Bibliographic Details
Published in:The European physical journal. C, Particles and fields Particles and fields, 2021-05, Vol.81 (5), p.1-15, Article 459
Main Authors: Aguirre, A. R., Flores-Hidalgo, G., Rana, R. G., Souza, E. S.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Elementary Particles
Energy
Equilibrium
Field theory
Hadrons
Heavy Ions
Internal energy
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Phase transitions
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
Scalars
Spacetime
String Theory
Symmetry
Temperature effects
Tensors
Thermodynamics
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Summary: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 ϕ 4 theory, and perform perturbative expansions in the coupling constant for obtaining relevant thermodynamics quantities.
ISSN:1434-6044
1434-6052
DOI:10.1140/epjc/s10052-021-09250-1