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Mode-sum prescription for the vacuum polarization in odd dimensions

Taylor, Peter orcid logoORCID: 0000-0002-8416-6408 and Breen, Cormac orcid logoORCID: 0000-0002-1606-8208 (2016) Mode-sum prescription for the vacuum polarization in odd dimensions. Physical Review D, 94 (12). ISSN 2470-0010

Abstract
his paper presents a new approach to computing the vacuum polarization of a scalar field in static, spherically symmetric backgrounds in odd dimensions. The novel approach is in expanding the two point function in Fourier modes, thereby enabling a mode by mode subtraction of infinities and a rapid convergence of the series. We present a new mode-sum regularization prescription for computing the vacuum polarization of a scalar field in static spherically symmetric black hole spacetimes in odd dimensions. This is the first general and systematic approach to regularized vacuum polarization in higher dimensions. Remarkably, the regularization parameters can be computed in closed form in arbitrary dimensions and for arbitrary metric function f(r). In fact, we show that in spite of the increasing severity and number of the divergences to be regularized, the method presented is mostly agnostic to the number of dimensions. Finally, as an explicit example of our method, we show plots for vacuum polarization in the Schwarzschild-Tangherlini spacetime for odd d=5,…,11.
Metadata
Item Type:Article (Published)
Refereed:Yes
Additional Information:Article number: 125024
Subjects:Physical Sciences > Astronomy > Astrophysics
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Science and Health > School of Mathematical Sciences
Publisher:American Physical Society
Official URL:https://dx.doi.org/10.1103/PhysRevD.94.125024
Copyright Information:© 2016 American Physical Society (APS)
ID Code:27637
Deposited On:13 Apr 2023 14:15 by Peter Taylor . Last Modified 13 Apr 2023 14:15
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