Casimir Effect for spherical boundaries: A thermofield dynamics approach
D.U. Matrasulov, Kh.T. Butanov, Kh.Yu. Rakhimov, F.C. Khanna, A.E., Santana
TL;DR
This paper investigates the Casimir effect in spherical geometries using Thermofield Dynamics, revealing temperature-dependent behavior where the Casimir force can change sign at high temperatures.
Contribution
It introduces a thermofield dynamics approach to analyze the Casimir effect for spherical boundaries, highlighting temperature effects on the force.
Findings
Casimir force changes sign at high temperatures
Thermofield dynamics effectively models spherical Casimir effects
Pressure and force are explicitly calculated for scalar fields
Abstract
The Casimir effect for spherical geometry is calculated using generalized Thermofield Dynamics for the case of scalar field. Casimir force and Casimir pressure are presented. It is found that for high temperatures the Casimir force does change sign.
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Taxonomy
TopicsQuantum Electrodynamics and Casimir Effect · Cosmology and Gravitation Theories · Quantum Mechanics and Applications