Zobrazeno 1 - 10
of 22
pro vyhledávání: '"N. Sadeghnezhad"'
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
Gamow’s theory of the implications of quantum tunneling for star burning has two cornerstones: quantum mechanics and the equipartition theorem. It has been proposed that both of these foundations are affected by the existence of a non-zero minimum
Externí odkaz:
https://doaj.org/article/c11c6ec58ddb476ca2d5e360f7ae7012
Publikováno v:
Advances in High Energy Physics, Vol 2017 (2017)
Considering the Einstein field equations in Lyra manifold and applying the unified first law of thermodynamics as well as the Clausius relation to the apparent horizon of FRW universe, we find the entropy of apparent horizon in Lyra manifold. In addi
Externí odkaz:
https://doaj.org/article/ddf5b049f6b1449690545f7a7d9f4218
Publikováno v:
Physica Scripta. 97:055008
Supernova explosion is a phenomenon described very well by the laws of quantum mechanics meaning that the Heisenberg uncertainty principle (HUP) restricts the achievable information from this source, and indeed, the accuracy of measurements on Hubble
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a620aab9f99b0aba68d3fb324356d393
https://doi.org/10.1088/1402-4896/ac6778
https://doi.org/10.1088/1402-4896/ac6778
Considering some modified Newtonian potentials and the Hubble law in writing the total energy of a test mass located at the edge of a flat Friedmann-Robertson-Walker universe, we obtain several modified Friedmann equations. Interestingly enough, our
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74eb611da6e8d52af740e39e48969d65
Publikováno v:
Advances in High Energy Physics, Vol 2017 (2017)
Advances in High Energy Physics
Advances in High Energy Physics
Considering the Einstein field equations in Lyra manifold, and applying the unified first law of thermodynamics as well as the Clausius relation to the apparent horizon of FRW universe, we find the entropy of apparent horizon in Lyra manifold. In add
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::242d52b8c666a4b348d2b1369eca2b34
http://arxiv.org/abs/1705.01421
http://arxiv.org/abs/1705.01421
Autor:
N. Sadeghnezhad
Existence of a minimal measurable length and an upper bound for the momentum fluctuations are the casting reasons for generalization of uncertainty principle and then reformulation of Hilbert space representation of quantum mechanics. In this paper,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::949d5b1c3911acca2383a67d80eb325d
There are some gravitational theories in which the ordinary energy-momentum conservation law is not valid in the curved space-time. Rastall gravity is one of the known theories in this regard, which includes a non-minimal coupling between geometry an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1668c8e198b0a628f288df4d1a6e21b5
Akademický článek
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Autor:
N Sadeghnezhad, Ahmad Shirzad
Publikováno v:
Journal of Physics A: Mathematical and General. 31:7403-7413
We introduce the notion of Lagrangian and Hamiltonian constraint structure coefficients. These coefficients appear in the process of investigating the consistency condition on constraints in both formulations. Then we show that for a first-class Hami
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6aa0c5b50c9d90e819191fb7796026d
https://doi.org/10.1088/0305-4470/31/36/011
https://doi.org/10.1088/0305-4470/31/36/011
Akademický článek
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