Thermal Casimir effect in G\"{o}del-type universes
Abstract
In this paper, a massless scalar field coupled to gravity is considered. Then the Casimir effect at finite temperature is calculated. Such development is carried out in the Thermo Field Dynamics formalism. This approach presents a topological structure that allows for investigating the effects of temperature and the size effect in a similar way. These effects are calculated considering G\"{o}del-type solutions as a gravitational background. The Stefan-Boltzmann law and its consistency are analyzed for both causal and non-causal G\"{o}del-type regions. In this space-time and for any region, the Casimir effect at zero temperature is always attractive. However, at finite temperature, a repulsive Casimir effect can emerge from a critical temperature.
Keywords
Cite
@article{arxiv.2210.02869,
title = {Thermal Casimir effect in G\"{o}del-type universes},
author = {A. F. Santos and Faqir C. Khanna},
journal= {arXiv preprint arXiv:2210.02869},
year = {2022}
}
Comments
15 pages, 3 figures, accepted for publication in PLB