Unitarity at the late time boundary of de Sitter

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00540681" target="_blank" >RIV/68378271:_____/20:00540681 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0318300" target="_blank" >http://hdl.handle.net/11104/0318300</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP06(2020)041" target="_blank" >10.1007/JHEP06(2020)041</a>

Result language
angličtina
Original language name
Unitarity at the late time boundary of de Sitter
Original language description
The symmetry group of the de Sitter spacetime, accommodates fields of various masses and spin among its unitary irreducible representations. These unitary representations are labeled by the spin and the weight contribution to the scaling dimension and depending on the mass and spin of the field the weight may take either purely real or purely imaginary values. In this work, we construct the late time boundary operators for a massive scalar field propagating in de Sitter spacetime, in arbitrary dimensions. We show that contrary to the case of Anti de Sitter, purely imaginery weights also correspond to unitary operators, as well as the ones with real weight, and identify the corresponding unitary representations. We demonstrate that these operators correspond to the late time boundary operators and elucidate that all of them have positive definite norm.n
Czech name
—
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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