Tsallis cosmology and its applications in dark matter physics with focus on IceCube high-energy neutrino data
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F22%3A00363481" target="_blank" >RIV/68407700:21340/22:00363481 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1140/epjc/s10052-022-11113-2" target="_blank" >https://doi.org/10.1140/epjc/s10052-022-11113-2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-022-11113-2" target="_blank" >10.1140/epjc/s10052-022-11113-2</a>
Alternative languages
Result language
angličtina
Original language name
Tsallis cosmology and its applications in dark matter physics with focus on IceCube high-energy neutrino data
Original language description
In this paper we employ a recent proposal of C. Tsallis and formulate the first law of thermodynamics for gravitating systems in terms of the extensive but non additive entropy. We pay a particular attention to an integrating factor for the heat one-form and show that in contrast to conventional thermodynamics it factorizes into thermal and entropic part. Ensuing two laws of thermodynamics imply Tsallis cosmology, which is then subsequently used to address the observed discrepancy between current bound on the Dark Matter relic abundance and present IceCube data on high-energy neutrinos. To resolve this contradiction we keep the conventional minimal Yukawa-type interaction between standard model and Dark Matter particles but replace the usual Friedmann field equations with Tsallis-cosmologybased modified Friedmann equations. We show that when the Tsallis scaling exponent 8 similar to 1.57 (or equivalently, the holographic scaling exponent alpha similar to 3.13) the aforementioned discrepancy disappears.
Czech name
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Czech description
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Classification
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
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal C
ISSN
1434-6044
e-ISSN
1434-6052
Volume of the periodical
82
Issue of the periodical within the volume
12
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
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UT code for WoS article
000898465700001
EID of the result in the Scopus database
2-s2.0-85144427619