Work

Thermal Casimir Effect in A Schwarzschild-like Wormhole Spacetime

Year: 2026

Type: preprint

Abstract: We study the finite-temperature Casimir effect for a massless scalar field confined between two parallel plates in a Schwarzschild-like wormhole spacetime. Imposing Dirichlet boundary conditions, we compute the renormalized Casimir free energy in the comoving frame. We find that the thermal correction to the renormalized Casimir free energy decreases gradually with the temperature and becomes independent of the background geometry in this frame. Thermodynamic quantities derived from the Casimir free energy, namely, the renormalized Casimir entropy, internal energy, and heat capacity at constant volume, exhibit distinct temperature dependence. At low temperatures, all thermodynamic quantities recover the expected behavior, consistent with the fundamental laws of thermodynamics. These results provide a compact framework for analyzing quantum vacuum forces in gravitational backgrounds.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2605.26743

Authors: Romadani, Arista, Adam, Apriadi Salim, Rohim, Ar, Subagyo, Bintoro Anang, Purwanto, Agus

Institutions: Institut Teknologi Sepuluh Nopember, Universitas Islam Negeri Maulana Malik Ibrahim, National Research and Innovation Agency, University of Indonesia

Language: English

Topic: Quantum Electrodynamics and Casimir Effect

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Badan Riset dan Inovasi Nasional, Institut Teknologi Sepuluh Nopember

OpenAlex ID: W7162571557

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