Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Bera, Sayantani"'
In this paper we describe a model for the $(\ell=2, m=0)$ spherical harmonic mode of the gravitational wave signal emitted by the coalescence of binary black holes, in particular, spin-aligned systems. This mode can be viewed as consisting of two com
Externí odkaz:
http://arxiv.org/abs/2405.17302
General Relativity (GR) remains the most accurate theory of gravity to date. It has passed many experimental tests in the Solar System as well as binary pulsar, cosmological and gravitational-wave (GW) observations. Some of these tests probe regimes
Externí odkaz:
http://arxiv.org/abs/2403.07682
Gravitational waves (GW) from the inspiral of binary compact objects offers a one-step measurement of the luminosity distance to the event, which is essential for the measurement of the Hubble constant, $H_0$, that characterizes the expansion rate of
Externí odkaz:
http://arxiv.org/abs/2312.16305
Publikováno v:
JCAP03(2023)041
The Lambda-Cold Dark Matter model explains cosmological observations most accurately till date. However, it is still plagued with various shortcomings at galactic scales. Models of dark matter such as superfluid dark matter, Bose-Einstein Condensate(
Externí odkaz:
http://arxiv.org/abs/2211.13988
Publikováno v:
ApJ 902 (2020) 79
We show how the angular clustering between gravitational-wave standard sirens and galaxies with known redshifts allows an inference of the Hubble constant, regardless of whether the host galaxies of any of these sirens are present in the galaxy catal
Externí odkaz:
http://arxiv.org/abs/2007.04271
The Lambda-Cold Dark Matter (LCDM) model agrees with most of the cosmological observations, but has some hindrances from observed data at smaller scales such as galaxies. Recently, Berezhiani and Khoury (2015) proposed a new theory involving interact
Externí odkaz:
http://arxiv.org/abs/2001.02591
Autor:
Bera, Sayantani, Banerjee, Shreya
Paul traps are ion traps that are widely used in spectroscopic experiments to confine and stabilize a charged particle within a small region using oscillating electric fields. The dynamics of the particle inside a Paul trap is described by Mathieu eq
Externí odkaz:
http://arxiv.org/abs/1808.10766
We propose a stochastic modification of the Schr\"{o}dinger-Newton equation which takes into account the effect of extrinsic spacetime fluctuations. We use this equation to demonstrate gravitationally induced decoherence of two gaussian wave-packets,
Externí odkaz:
http://arxiv.org/abs/1608.02102
Quantum non-local correlations and the acausal, spooky action at a distance suggest a discord between quantum theory and special relativity. We propose a resolution for this discord by first observing that there is a problem of time in quantum theory
Externí odkaz:
http://arxiv.org/abs/1605.06022
Publikováno v:
Phys.Lett. A380 (2016) 3778-3785
The quantum to classical transition maybe caused by decoherence or by dynamical collapse of the wave-function. We propose quantum discord as a tool, 1) for comparing and contrasting the role of a collapse model (Continuous Spontaneous Localization) a
Externí odkaz:
http://arxiv.org/abs/1604.05834