Regular Article - Theoretical Physics
Repulsive Casimir force in stationary axisymmetric spacetimes
Departamento de Física, Universidade Estadual de Londrina, 86051-990, Londrina, PR, Brazil
2 Escola de Ciências e Tecnologia, Universidade Federal do Rio Grande do Norte, 59072-970, Natal, RN, Brazil
Accepted: 4 January 2022
Published online: 19 January 2022
We study the influence of stationary axisymmetric spacetimes on Casimir energy. We consider a massive scalar field and analyze its dependence on the apparatus orientation with respect to the dragging direction associated with such spaces. We show that, for an apparatus orientation not considered before in the literature, the Casimir energy can change its sign, producing a repulsive force. As applications, we analyze two specific metrics: one associated with a linear motion of a cylinder and a circular equatorial motion around a gravitational source described by Kerr geometry.
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