Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Urbashi Satpathi"'
Autor:
P. Singha Deo, Urbashi Satpathi
Publikováno v:
Results in Physics, Vol 12, Iss , Pp 1506-1512 (2019)
There is no self adjoint time operator defined in quantum mechanics. However, time intervals can be defined in several ways and can also be probed experimentally. Our interest in this work is traversal time and signal propagation time. According to C
Externí odkaz:
https://doaj.org/article/497a5491fcb14c1dacbfd1489e90f363
Publikováno v:
Physical review. E. 106(4)
We study the interplay of chaos and tunnelling between two weakly-coupled Bose-Josephson junctions. The classical phase space of the composite system has a mixed structure including quasi-integrable self-trapping islands for particles and excitations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f59a7d1be82c6296bab5f89d30ae2787
https://pubmed.ncbi.nlm.nih.gov/36397523
https://pubmed.ncbi.nlm.nih.gov/36397523
Publikováno v:
Pramana. 96
We use the Quantum Langevin equation as a starting point to study the response function, the position-velocity correlation function and the velocity autocorrelation function of a charged Quantum Brownian particle in the presence of a magnetic field a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f72a268bacbd0f508cfefe2aae4ce227
https://doi.org/10.1007/s12043-022-02295-1
https://doi.org/10.1007/s12043-022-02295-1
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 608:128266
We analyse the long time tails of a charged quantum Brownian particle in a harmonic potential in the presence of a magnetic field using the Quantum Langevin Equation as a starting point. We analyse the long time tails in the position autocorrelation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a4032f0d19b6620407dd3dd5481c83f
https://doi.org/10.1016/j.physa.2022.128266
https://doi.org/10.1016/j.physa.2022.128266
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 605:128010
We study the Quantum Brownian motion of a charged particle moving in a harmonic potential in the presence of an uniform external magnetic field and linearly coupled to an Ohmic bath through momentum variables. We analyse the growth of the mean square
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::958422cd3fe6d2b0e3a22f42eab8de3f
https://doi.org/10.1016/j.physa.2022.128010
https://doi.org/10.1016/j.physa.2022.128010
Autor:
Urbashi Satpathi, P. Singha Deo
Publikováno v:
Results in Physics, Vol 12, Iss, Pp 1506-1512 (2019)
There is no self adjoint time operator defined in quantum mechanics. However, time intervals can be defined in several ways and can also be probed experimentally. Our interest in this work is traversal time and signal propagation time. According to C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::789d4a6c806bab7bb2c2f4691c4adc24
http://www.sciencedirect.com/science/article/pii/S2211379718319879
http://www.sciencedirect.com/science/article/pii/S2211379718319879
Autor:
Subhajit Bhar, Maheswar Swar, Urbashi Satpathi, Supurna Sinha, Rafael Sorkin, Saptarishi Chaudhuri, Sanjukta Roy
We report our experimental measurements and theoretical analysis of the position response function of a cloud of cold atoms residing in the viscous medium of an optical molasses and confined by a magneto-optical trap (MOT). We measure the position re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d148ba5588232216b2633ac0acaac7c
http://arxiv.org/abs/2101.09118
http://arxiv.org/abs/2101.09118
Autor:
Supurna Sinha, Urbashi Satpathi
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 506:692-701
We investigate the Brownian motion of a charged particle in a magnetic field. We study this in the high temperature classical and low temperature quantum domains. In both domains, we observe a transition of the mean square displacement from a monoton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3eb7f443bcf9566d00a46d33de36c01
https://doi.org/10.1016/j.physa.2018.04.085
https://doi.org/10.1016/j.physa.2018.04.085
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 54:425701
We present a general scheme for constructing robust excitations (soliton-like) in non-integrable multicomponent systems. By robust, we mean localised excitations that propagate with almost constant velocity and which interact cleanly with little to n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fec7f5cf0eb35b6bb93240a5b5fd60b
https://doi.org/10.1088/1751-8121/ac1ee5
https://doi.org/10.1088/1751-8121/ac1ee5
Autor:
Supurna Sinha, Urbashi Satpathi
We investigate the time dependent orbital diamagnetic moment of a charged particle in a magnetic field in a viscous medium via the Quantum Langevin Equation. We study how the interplay between the cyclotron frequency and the viscous damping rate gove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f231da8a2188aed1d3be9b5202761fb