Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Agashe, Anish"'
Autor:
Agashe, Anish, Modumudi, Sai Madhav
Publikováno v:
Universe 2024, 10(6), 261
In the covariant averaging scheme of macroscopic gravity, the process of averaging breaks the metricity of geometry. We reinterpret the back-reaction within macroscopic gravity in terms of the non-metricity of averaged geometry. This interpretation e
Externí odkaz:
http://arxiv.org/abs/2406.07722
Autor:
Ripple, James, Agashe, Anish
The Tolman VII space-time is one of the few physically acceptable exact solutions in general relativity. In this paper, we derive a generalised Tolman VII solution which includes a charge and a cosmological constant. We analyse the spatial geometry o
Externí odkaz:
http://arxiv.org/abs/2405.20615
Publikováno v:
2024 Class. Quantum Grav. 41 235005
Schr\"odinger connections are a special class of affine connections, which despite being metric incompatible, preserve length of vectors under autoparallel transport. In the present paper, we introduce a novel coordinate-free formulation of Schr\"odi
Externí odkaz:
http://arxiv.org/abs/2402.06167
Autor:
Agashe, Anish
Publikováno v:
Int. J. Geom. Meth. Mod. Phys., 21, 06, 2450120 (2024)
The Raychaudhuri equation for a congruence of curves in a general non-Riemannian geometry is derived. A formal connection is established between the expansion scalar and the cross-sectional volume of the congruence. It is found that the expansion sca
Externí odkaz:
http://arxiv.org/abs/2312.06418
Autor:
Agashe, Anish, Ishak, Mustapha
Publikováno v:
Phys. Rev. D 108, 104010 (2023)
The theory of macroscopic gravity provides a formalism to average the Einstein field equations from small scales to largest scales in space-time. It is well known that averaging is an operation that does not commute with calculating the Einstein tens
Externí odkaz:
http://arxiv.org/abs/2310.10641
Autor:
Agashe, Anish
Publikováno v:
Phys. Scr. 98 105210 (2023)
In a given geometry, the kinematics of a congruence of curves is described by a set of three quantities called expansion, rotation, and shear. The equations governing the evolution of these quantities are referred to as kinematic equations. In this p
Externí odkaz:
http://arxiv.org/abs/2303.08960
Autor:
Agashe, Anish, Ishak, Mustapha
It is well-known that spacetime averaging is an operation that does not commute with building the Einstein tensor. In the framework of Macroscopic gravity (MG), a covariant averaging procedure, this non-commutativity gives averaged field equations wi
Externí odkaz:
http://arxiv.org/abs/2211.13154
Autor:
Yao, Ji, Pedersen, Eske M., Ishak, Mustapha, Zhang, Pengjie, Agashe, Anish, Xu, Haojie, Shan, Huanyuan
To reach the full potential for the next generation of weak lensing surveys, it is necessary to mitigate the contamination of intrinsic alignments (IA) of galaxies in the observed cosmic shear signal. The self calibration (SC) of intrinsic alignments
Externí odkaz:
http://arxiv.org/abs/1911.01582
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