Photon propagator in de Sitter space in the general covariant gauge

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00579705" target="_blank" >RIV/68378271:_____/23:00579705 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0348511" target="_blank" >https://hdl.handle.net/11104/0348511</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP05(2023)126" target="_blank" >10.1007/JHEP05(2023)126</a>

Result language
angličtina
Original language name
Photon propagator in de Sitter space in the general covariant gauge
Original language description
We consider a free photon field in D-dimensional de Sitter space, and construct its propagator in the general covariant gauge. Canonical quantization is employed to define the system starting from the classical theory. This guarantees that the propagator satisfies both the equation of motion and subsidiary conditions descending from gauge invariance and gauge fixing. We first construct the propagator as a sum-over-modes in momentum space, carefully accounting for symmetry properties of the state. We then derive the position space propagator in a covariant representation, that is our main result. Our conclusions disagree with previous results as we find that the position space photon propagator necessarily breaks de Sitter symmetry, except in the exact transverse gauge limit.n
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/GA20-28525S" target="_blank" >GA20-28525S: Strong Gravity as a Microscope for the Dark Universe</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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