Work

Fermionic van der Waals and Casimir-Polder interactions

Year: 2025

Type: article

Abstract: We formulate fermionic versions, for any number of spatial dimensions, of the van der Waals and Casimir-Polder interactions and study their properties. In both cases, the systems we introduce contain localized “atoms”: two-level systems, coupled to a vacuum Dirac field. This Dirac field plays here a role akin to the electromagnetic field in the van der Waals case. In this context, bag model conditions for the Dirac field serve as the analog of the “mirror” in the Casimir-Polder effect. We found that, in this case, the resulting interaction is repulsive.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.045017

Authors: C. D. Fosco, G. Hansen

Institution: Bariloche Atomic Centre

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: hybrid

Funders: Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Cuyo, Agencia Nacional de Promoción Científica y Tecnológica

Award: G7378882120