Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Dastidar, Krishna Rai"'
Autor:
Gupta, Moumita, Dastidar, Krishna Rai
Publikováno v:
Phys. Scr. 98 (2023) 075402
We study the vortex formation in coupled atomic and molecular condensates in a rotating double well trap by numerically solving the coupled Gross-Pitaevskii like equations. Starting with the atomic condensate in the double well potential we considere
Externí odkaz:
http://arxiv.org/abs/2306.14741
Autor:
Dastidar, Krishna Rai, Gupta, Moumita
In the present work we have studied the dynamics of dipolar atom-molecular Bose Einstein Condensates coupled via Feshbach Resonance in a double well potential. We have numerically solved four coupled GP like equations, two for left well and two for r
Externí odkaz:
http://arxiv.org/abs/2106.12274
We study the coupled atom-molecular quantized ring vortices of 87Rb Bose-Einstein Condensates (BEC) trapped in a rotating three dimensional (3D) anisotropic cylindrical trap both in time independent and time-dependent Gross-Pitaevskii approaches. For
Externí odkaz:
http://arxiv.org/abs/1906.01426
We theoretically study the effects of trap-confinement and interatomic interactions on Josephson oscillations (JO) and macroscopic quantum self-trapping (MQST) for a Bose-Einstein condensate (BEC) confined in a trap which has a symmetric double-well
Externí odkaz:
http://arxiv.org/abs/1903.07417
Autor:
Adhikary, Kingshuk, Mal, Subhanka, Deb, Bimalendu, Das, Biswajit, Dastidar, Krishna Rai, Gupta, Subhasish Dutta
We define the standard quantum limit (SQL) for phase and number fluctuations, and describe two-mode squeezing for number and phase variables. When phase is treated as a unitary quantum-mechanical operator, number and phase operators satisfy an uncert
Externí odkaz:
http://arxiv.org/abs/1710.03597
Dynamics of atomic and molecular bright solitons in a hybrid atom-molecular BEC (Bose Einstein Condensate) system of 85Rb coupled through Magnetic Feshbach Resonance (MFR) has been investigated. By solving the time independent atom-molecular coupled
Externí odkaz:
http://arxiv.org/abs/1602.08992
The interacting atom-molecule BEC (AMBEC) dynamics is investigated in the mean field ap- proach. The presence of atom-atom, atom-molecule and molecule-molecule interactions, coupled with a characteristically different interaction representing atom-mo
Externí odkaz:
http://arxiv.org/abs/1109.5571
Autor:
Gupta, Moumita, Dastidar, Krishna Rai
We have investigated the role of momentum dependent s-wave and higher partial wave strong interactions to determine the ground state properties and the column densities in the Bose-Einstein condensate (BEC) for large scattering length (a) such that k
Externí odkaz:
http://arxiv.org/abs/1101.5264
In a recent work [Mod. Phys. Lett A13, p-1265 (1998)] we expounded a non-local Quantum Electrodynamics (QED) which predicted a linear two-photon absorption by an atom placed in a laser field of appropriate intensity and frequency. In this paper we ex
Externí odkaz:
http://arxiv.org/abs/quant-ph/0204109
Publikováno v:
Mod.Phys.Lett. A14 (1999) 2557-2560
It has been demonstrated in a recent paper (Mod.Phys.Lett. A13, 1265 (1998); hep-th/9902020) that the existence of a non-thermodynamic arrow of time at the atomic level is a fundamental requirement for conservation of energy in matter-radiation inter
Externí odkaz:
http://arxiv.org/abs/hep-th/9906133