Zobrazeno 1 - 10
of 25
pro vyhledávání: '"M.E. Ateuafack"'
Publikováno v:
Results in Physics, Vol 30, Iss , Pp 104888- (2021)
The effect of population imbalance in p-wave superfluids in the BCS-BEC crossover regime at finite temperatures is studied through the path integral formalism. Using the Hubbard–Stratonovich transformation, the partition function of the system is c
Externí odkaz:
https://doaj.org/article/38c7aa458c7147b483a32f7ddd7f7f3b
Publikováno v:
Journal of Applied Mathematics and Physics. :133-145
A path-integral representation of central spin system immersed in an antiferromagnetic environment was investigated. To carry out this study, we made use of the discrete-time propagator method associated with a basic set involving coherent states of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c3baa6cf1501cb822cba088c9018fe7
https://doi.org/10.4236/jamp.2021.91010
https://doi.org/10.4236/jamp.2021.91010
Publikováno v:
Results in Physics, Vol 30, Iss, Pp 104888-(2021)
The effect of population imbalance in p-wave superfluids in the BCS-BEC crossover regime at finite temperatures is studied through the path integral formalism. Using the Hubbard–Stratonovich transformation, the partition function of the system is c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a8ad15a94fef663a72d398a2eae61c6
http://www.sciencedirect.com/science/article/pii/S2211379721009256
http://www.sciencedirect.com/science/article/pii/S2211379721009256
Publikováno v:
Physics Letters A. 383:1350-1356
The generalised multilevel Landau–Zener problem is solved by applying the density matrix technique within the framework of nonstationary perturbation theory. The exact survival probability is achieved as a proof of the Brundobler–Elzer hypothesis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb1dd631d0ca254287f3cfa400f9c45d
https://doi.org/10.1016/j.physleta.2019.01.035
https://doi.org/10.1016/j.physleta.2019.01.035
Publikováno v:
Superlattices and Microstructures. 111:310-318
The paper investigates the transition dynamic of a two-level system coupled uniformly to a general XY dissipative spin-chain environment with the Dzyaloshinsky-Moriya interaction. The collective effect of the spin-chain environment is studied and we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::578e05bf1c921f4f9a75ae70b23ab64c
https://doi.org/10.1016/j.spmi.2017.06.044
https://doi.org/10.1016/j.spmi.2017.06.044
Publikováno v:
Superlattices and Microstructures. 106:76-85
The paper presents a weak coupling polaron in a spherical dot with magnetic impurities and investigates conditions for which the system mimics a qubit. Particularly, the work focuses on the Landau-Zener (LZ) scenario undergone by the polaron and deri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b19d4e921f294ecfb9dadf3e7ca499b2
https://doi.org/10.1016/j.spmi.2017.03.027
https://doi.org/10.1016/j.spmi.2017.03.027
Publikováno v:
Physica B: Condensed Matter. 483:37-43
The paper investigates the effects of a two-level quantum system coupled to transversal and longitudinal dissipative environment. The time-dependent phase accumulation, LZ transition probability and entropy in the presence of fast-ohmic, sub-ohmic an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ffd79920a88ee2e8c2418a5d6f53428
https://doi.org/10.1016/j.physb.2015.12.012
https://doi.org/10.1016/j.physb.2015.12.012
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 118:113940
We consider a non-Hermitian Hamiltonian in order to effectively describe a dissipative spin chain in a transverse magnetic field. The model Hamiltonian is technically transformed to mimic the famous well known Landau–Zener two-level model. The time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7c06936c8d2e978cc91857928d11db3
https://doi.org/10.1016/j.physe.2019.113940
https://doi.org/10.1016/j.physe.2019.113940
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 116:113744
The feasibility of stochastic Hamiltonians for interacting qubits to deliver consistent quantum speedups in quantum adiabatic optimisation remains an open question. This paper studies theoretically the noisy Landau–Zener model of a system of two in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f74f4416c4265ae4dca847d520f31f90
https://doi.org/10.1016/j.physe.2019.113744
https://doi.org/10.1016/j.physe.2019.113744
Publikováno v:
Journal of Quantum Information Science. :10-15
The decoherence of a central electron spin of an atom coupled to an anti-ferromagnetic spin bath in the presence of a time varying B-Field (VBF) is investigated applying the Holstein-Primak off and Bloch transformations approaches. The Boltzmann entr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00ba00c4390043529dce764150c81fd3
https://doi.org/10.4236/jqis.2013.31003
https://doi.org/10.4236/jqis.2013.31003