Zobrazeno 1 - 10
of 225
pro vyhledávání: '"Kothawala, P"'
Autor:
Mondal, Avinandan, Kothawala, Dawood
We discuss the structure of microcanonical ensembles in inertial and non-inertial frames attached to a confined system of positive energy particles in curved spacetime. Under certain physically reasonable assumptions that ensure the existence of such
Externí odkaz:
http://arxiv.org/abs/2412.10058
This paper explores modifications to General Relativity (GR) by considering higher-order curvature terms in the gravitational action, specifically focusing on the quadratic Ricci scalar and a particular cubic contraction of the Riemann tensor. These
Externí odkaz:
http://arxiv.org/abs/2410.01266
Autor:
Kothawala, Dawood
Publikováno v:
Phys. Rev. D 110, L121502 (2024)
One version of the principle of equivalence, as originally formulated by Einstein, states that ``gravity" can be mimicked locally by going to an ``accelerated frame of reference". As highlighted by Synge, the physical content of this principle remain
Externí odkaz:
http://arxiv.org/abs/2403.16229
Autor:
Kothawala, Dawood, Saini, Sahil
The workshop was organized at IUCAA on Oct 30 - Nov 3, 2023 as a compact discussion and discourse meeting with a threadbare exposition and discussion of the various aspects and the questions arising. It was occasioned by the visit of Professor Hakan
Externí odkaz:
http://arxiv.org/abs/2402.15543
Publikováno v:
Phys. Rev. D 109 (2024) 6, 065017
We highlight some universal features concerning the role of spacetime curvature in the entanglement induced between quantum probes coupled to a quantum field in a suitable vacuum state. The probes are initially causally disconnected and non-entangled
Externí odkaz:
http://arxiv.org/abs/2311.15019
Autor:
K, Hari., Kothawala, Dawood
Publikováno v:
Phys. Rev. D 109, 104073 (2024)
We analyse several aspects of detectors with uniform acceleration $a$ and uniform rotation $\Omega$ in de Sitter ($\Lambda>0$) and anti-de Sitter ($\Lambda<0$) spacetimes, focusing particularly on the periodicity, in (Euclidean) proper time $\tau_{\r
Externí odkaz:
http://arxiv.org/abs/2307.16413
Autor:
Kothawala, Dawood
A generic implication of incorporating gravitational effects in the analysis of quantum measurements is the existence of a zero-point length of spacetime. This requires an inherently non-local description of spacetime, beyond the usual one based on m
Externí odkaz:
http://arxiv.org/abs/2305.09265
Autor:
Kothawala, Dawood
All our observations that characterise space and time are expressed in terms of non-local, bi-tensorial objects such as geodesic intervals between events and two-point (Green) functions. In this contribution, I highlight the importance of characteris
Externí odkaz:
http://arxiv.org/abs/2304.01995
There has been considerable interest over the past years in investigating the role of gravity in quantum phenomenon such as entanglement and decoherence. In particular, gravitational time dilation is believed to decohere superpositions of center of m
Externí odkaz:
http://arxiv.org/abs/2302.09038
Publikováno v:
The Cryosphere, Vol 18, Pp 1443-1465 (2024)
As the permafrost region warms and permafrost soils thaw, vast stores of soil organic carbon (C) become vulnerable to enhanced microbial decomposition and lateral transport into aquatic ecosystems as dissolved organic carbon (DOC). The mobilization o
Externí odkaz:
https://doaj.org/article/fbb91441113f492aaba3680e7ef5ee64
