Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Avik, De"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 3, Pp 1-9 (2024)
Abstract We investigate the cosmological implications of f(Q) gravity, which is a modified theory of gravity based on non-metricity, in non-flat geometry. We perform a detailed dynamical-system analysis keeping the f(Q) function completely arbitrary.
Externí odkaz:
https://doaj.org/article/8faa7566803a4944b87590f082c0e107
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 12, Pp 1-9 (2023)
Abstract Symmetric Teleparallel Gravity allows for the reformulation of gravity in the form of nonmetricity by vanishing the contorsion term in the generic affine connection. Our focus is on investigating a recently proposed extension of this theory
Externí odkaz:
https://doaj.org/article/8277bbaff1644706addae6c6a029e8f4
Publikováno v:
New Astronomy, Vol 89, Issue Nov (2021) 101637(7 pages)
We revisit the evolution of the scale factor in a flat FRW spacetime with a new generalized decay rule for the dynamic $\Lambda$-term under modified theories of gravity. It analyses certain cosmological parameters and examines their behaviours in thi
Externí odkaz:
http://arxiv.org/abs/2010.09444
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 6, Pp 1-12 (2023)
Abstract The vanishing affine connections have been used solely while adopting the modified f(Q) gravity theory to the cosmology. Consequently, researchers could not get beyond what is already known in f(T) theory earlier. To alleviate this problem,
Externí odkaz:
https://doaj.org/article/ad490588d2be4406952e1925c84ffea3
Autor:
M. Koussour, Avik De
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-15 (2023)
Abstract In the past few years, f(Q) theories have drawn a lot of research attention in replacing Einstein’s theory of gravity successfully. The current study examines the novel cosmological possibilities emerging from two specific classes of f(Q)
Externí odkaz:
https://doaj.org/article/b21bb941abab461cbae67a30edf73e46
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 3, Pp 1-9 (2023)
Abstract In the present article we analyze the matter-geometry coupled f(Q, T) theory of gravity. We offer the fully covariant formulation of the theory, with which we construct the correct energy balance equation and employ it to conduct a dynamical
Externí odkaz:
https://doaj.org/article/5a9ef643e6f14abdb16ac17c5d489d1f
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 8, Pp 1-10 (2022)
Abstract Theories of gravity are fundamentally a relation between matter and the geometric structure of the underlying spacetime. So once we put some additional restrictions on the spacetime geometry, the theory of gravity is bound to get the impact,
Externí odkaz:
https://doaj.org/article/9e2af6bd52fd44cfa7f1fab3633089a4
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 1, Pp 1-11 (2022)
Abstract Despite having the somewhat successful description of accelerated cosmology, the early evolution of the universe always challenges mankind. Our promising approach lies in a new class of symmetric teleparallel theory of gravity named f(Q), wh
Externí odkaz:
https://doaj.org/article/7e61115528ce476493fb0c1801fc7166
Publikováno v:
IEEE Access, Vol 10, Pp 16010-16027 (2022)
Translating the center of mass (CoM) while fixing the orientation of a rigid body supported by relatively massless, actuated limbs is a common problem setting in legged robotics. This paper proposes a hierarchical approach to such maneuvers that deco
Externí odkaz:
https://doaj.org/article/6d9a6f69a53e4151bd454aea073cb193
Publikováno v:
In New Astronomy November 2021 89