A gravitational energy-momentum and the thermodynamic description of gravity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10385977" target="_blank" >RIV/00216208:11320/18:10385977 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1361-6382/aab1c7" target="_blank" >https://doi.org/10.1088/1361-6382/aab1c7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6382/aab1c7" target="_blank" >10.1088/1361-6382/aab1c7</a>

Result language
angličtina
Original language name
A gravitational energy-momentum and the thermodynamic description of gravity
Original language description
A proposal for the gravitational energy-momentum tensor, known in the literature as the square root of Bel-Robinson tensor (SQBR), is analyzed in detail. Being constructed exclusively from the Weyl part of the Riemann tensor, such tensor encapsulates the geometric properties of free gravitational fields in terms of optical scalars of null congruences: making use of the general decomposition of any energy-momentum tensor, we explore the thermodynamic interpretation of such geometric quantities. While the matter energy-momentum is identically conserved due to Einstein's field equations, the SQBR is not necessarily conserved and dissipative terms could arise in its vacuum continuity equation. We discuss the possible physical interpretations of such mathematical properties.
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
10300 - Physical sciences

Project
<a href="/en/project/GJ17-16260Y" target="_blank" >GJ17-16260Y: Thermodynamics of the gravitational field</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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