Towards obtaining Green functions for a Casimir cavity in de Sitter spacetime
(2015) In Physica Scripta 90(7).- Abstract
- Recent work in the literature has studied rigid Casimir cavities in a weak gravitational field, or in de Sitter spacetime, or yet other spacetime models. The present review paper studies the difficult problem of direct evaluation of scalar Green functions for a Casimir-type apparatus in de Sitter spacetime. Working to first order in the small parameter of the problem, i.e. twice the gravity acceleration times the plates' separation divided by the speed of light in vacuum, suitable coordinates are considered for which the differential equations obeyed by the zeroth- and first-order Green functions can be solved in terms of special functions. This result can be used, in turn, to obtain, via the point-split method, the regularized and... (More)
- Recent work in the literature has studied rigid Casimir cavities in a weak gravitational field, or in de Sitter spacetime, or yet other spacetime models. The present review paper studies the difficult problem of direct evaluation of scalar Green functions for a Casimir-type apparatus in de Sitter spacetime. Working to first order in the small parameter of the problem, i.e. twice the gravity acceleration times the plates' separation divided by the speed of light in vacuum, suitable coordinates are considered for which the differential equations obeyed by the zeroth- and first-order Green functions can be solved in terms of special functions. This result can be used, in turn, to obtain, via the point-split method, the regularized and renormalized energy–momentum tensor both in the scalar case and in the physically more relevant electromagnetic case. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7369960
- author
- Esposito, Giampiero and Napolitano, George LU
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physica Scripta
- volume
- 90
- issue
- 7
- article number
- 074013
- publisher
- IOP Publishing
- external identifiers
-
- wos:000357541800014
- scopus:84938488472
- ISSN
- 0031-8949
- DOI
- 10.1088/0031-8949/90/7/074013
- language
- English
- LU publication?
- yes
- id
- f5f98614-a648-40d0-bdee-daf94033344b (old id 7369960)
- date added to LUP
- 2016-04-01 10:56:50
- date last changed
- 2022-01-26 03:57:15
@article{f5f98614-a648-40d0-bdee-daf94033344b,
abstract = {{Recent work in the literature has studied rigid Casimir cavities in a weak gravitational field, or in de Sitter spacetime, or yet other spacetime models. The present review paper studies the difficult problem of direct evaluation of scalar Green functions for a Casimir-type apparatus in de Sitter spacetime. Working to first order in the small parameter of the problem, i.e. twice the gravity acceleration times the plates' separation divided by the speed of light in vacuum, suitable coordinates are considered for which the differential equations obeyed by the zeroth- and first-order Green functions can be solved in terms of special functions. This result can be used, in turn, to obtain, via the point-split method, the regularized and renormalized energy–momentum tensor both in the scalar case and in the physically more relevant electromagnetic case.}},
author = {{Esposito, Giampiero and Napolitano, George}},
issn = {{0031-8949}},
language = {{eng}},
number = {{7}},
publisher = {{IOP Publishing}},
series = {{Physica Scripta}},
title = {{Towards obtaining Green functions for a Casimir cavity in de Sitter spacetime}},
url = {{http://dx.doi.org/10.1088/0031-8949/90/7/074013}},
doi = {{10.1088/0031-8949/90/7/074013}},
volume = {{90}},
year = {{2015}},
}