Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Alexander Lukyanenko"'
Publikováno v:
Universe, Vol 10, Iss 9, p 366 (2024)
In the Euclidean form of the theory of gravity, where there is no dedicated time parameter, a generalized canonical form of the principle of least action is proposed. On its basis, the quantum principle of least action is formulated, in which the “
Externí odkaz:
https://doaj.org/article/280ae0ccee2b4532a1421292c8cc4fe0
Publikováno v:
Universe, Vol 10, Iss 2, p 101 (2024)
An alternative formulation of the no-boundary initial state of the universe in the Euclidean quantum theory of gravity is proposed. Unlike the no-boundary Hartle–Hawking wave function, in which time appears together with macroscopic space–time in
Externí odkaz:
https://doaj.org/article/d21b6ea5ab95439da2968f58c81541ba
Publikováno v:
Universe, Vol 8, Iss 11, p 568 (2022)
A theory of the initial state of the universe is proposed within the framework of the Euclidean quantum theory of gravity. The theory is based on a quantum representation in which the action functional is implemented as an operator on the space of wa
Externí odkaz:
https://doaj.org/article/4270238bd464416586aaa78c2fd791ee
Publikováno v:
Universe, Vol 7, Iss 11, p 452 (2021)
A version of the quantum theory of gravity based on the concept of the wave functional of the universe is proposed. To determine the physical wave functional, the quantum principle of least action is formulated as a secular equation for the correspon
Externí odkaz:
https://doaj.org/article/e63b2ba1e17c408ab4f1c9a307a5134f
Publikováno v:
Universe, Vol 6, Iss 10, p 174 (2020)
To define time in the homogeneous anisotropic Bianchi-IX model of the universe, we propose a classical equation of motion of the proper time of the universe as an additional gauge condition. This equation is the law of conservation of energy. As a re
Externí odkaz:
https://doaj.org/article/5759a2319f0943f4815065ba61a8a91b
Within the framework of the previously proposed formulation of the quantum theory of gravity in terms of world histories, it was suggested that the universe has its own mass. This quantity is analogous to the mass of a particle in relativistic mechan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab12b4ba0492cc8f61079883da5265a8
http://arxiv.org/abs/2212.12599
http://arxiv.org/abs/2212.12599
Autor:
Alexander Lukyanenko, N. N. Gorobei
Publikováno v:
Physics of the Solid State. 62:2400-2402
A representation is proposed for the statistical sum for a macroscopic body in the form of a Euclidean functional integral in which the body deformation is a classical fluctuation-free parameter. The equation of state of the body relating its deforma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d68d3afe2ef3ffd6efe322ab09870a8
https://doi.org/10.1134/s1063783420120100
https://doi.org/10.1134/s1063783420120100
Autor:
Alexander Lukyanenko, N. N. Gorobei
Publikováno v:
Physics of the Solid State. 61:650-653
The macroscopic laws determining the temperature and deformations of an anharmonic solid body in a given external temperature force field have been stated in the form of the first thermodynamics law supplemented by equations of state of the body. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00e6483120e741d75b84a6644a2ba992
https://doi.org/10.1134/s1063783419040127
https://doi.org/10.1134/s1063783419040127
Publikováno v:
St. Petersburg Polytechnical University Journal: Physics and Mathematics. 3:170-173
The paper puts forward a modification of the no-boundary Hartle–Hawking wave function in which, in the general case, the Euclidean functional integral can be described by an inhomogeneous universe. The regularization of this integral is achieved in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4681b486a6349b70f63e8ef3ef84691a
https://doi.org/10.1016/j.spjpm.2017.05.002
https://doi.org/10.1016/j.spjpm.2017.05.002
Publikováno v:
St. Petersburg Polytechnical University Journal: Physics and Mathematics. 3:174-179
A toy quantum model of the inflationary universe is considered in which the role of cosmic time is played by the inflaton scalar field (its logarithm). Based on a variant of the positive energy theorem in General Relativity for the case of a closed u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62f1fdcb1d59d8ecd3255b5e1d0d8b2e
https://doi.org/10.1016/j.spjpm.2017.05.008
https://doi.org/10.1016/j.spjpm.2017.05.008