Thermal Casimir effect in Gödel-type universes

Date

2022

Authors

Santos, A.F.
Khanna, Faqir C.

Journal Title

Journal ISSN

Volume Title

Publisher

Physics Letters B

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 Gödel-type solutions as a gravitational background. The Stefan-Boltzmann law and its consistency are analyzed for both causal and non-causal Gödel-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.

Description

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Citation

Santos, A. F. & Khanna, F. C. (2022). “Thermal Casimir effect in Gödel-type universes.” Physics Letters B, 835(137493). https://doi.org/10.1016/j.physletb.2022.137493