@Article{Maranon-Gonzalez+Navarro-Salas2023,
author="Mara{\~{n}}on-Gonzalez, F. J.
and Navarro-Salas, J.",
title="Adiabatic regularization for spin-1 fields",
journal="Physical Review D",
year="2023",
publisher="Amer Physical Soc",
volume="108",
number="12",
pages="125001 - 11pp",
abstract="We analyze the adiabatic regularization scheme to renormalize Proca fields in a four-dimensional Friedmann-Lemaitre-Robertson-Walker spacetime. The adiabatic method is well established for scalar and spin-1/2 fields, but is not yet fully understood for spin-1 fields. We give the details of the construction and show that, in the massless limit, the renormalized stress-energy tensor of the Proca field is closely related to that of a minimally coupled scalar field. Our result is in full agreement with other approaches, based on the effective action, which also show a discontinuity in the massless limit. The scalar field can be naturally regarded as a Stueckelberg-type field. We also test the consistency of our results in de Sitter space.",
optnote="WOS:001121689900014",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5871), last updated on Fri, 12 Jan 2024 16:52:41 +0000",
issn="2470-0010",
doi="10.1103/PhysRevD.108.125001",
opturl="https://arxiv.org/abs/2310.11860",
opturl="https://doi.org/10.1103/PhysRevD.108.125001",
language="English"
}