Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation

The nonequilibrium dynamics of a Bose-Einstein condensate selectively loaded into every third site of a one-dimensional optical lattice was discussed. A two-particle irreducible (2PI) closed-time-path (CTP) effective action was used for the purpose. Three different approximations under the 2PI CTP s...

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Autores principales: Rey, A.M., Hu, B.L., Calzetta, E., Roura, A., Clark, C.W.
Formato: JOUR
Materias:
Approximation theory
Atoms
Correlation methods
Eigenvalues and eigenfunctions
Hamiltonians
Light scattering
Mathematical operators
Parameter estimation
Perturbation techniques
Problem solving
Bose-Einstein condensates
Closed-time-path (CTP)
Optical lattices
Trapped atoms
Quantum theory
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_10502947_v69_n3_p033610_Rey
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_10502947_v69_n3_p033610_Rey2023-10-03T15:59:37Z Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation Rey, A.M. Hu, B.L. Calzetta, E. Roura, A. Clark, C.W. Approximation theory Atoms Correlation methods Eigenvalues and eigenfunctions Hamiltonians Light scattering Mathematical operators Parameter estimation Perturbation techniques Problem solving Bose-Einstein condensates Closed-time-path (CTP) Optical lattices Trapped atoms Quantum theory The nonequilibrium dynamics of a Bose-Einstein condensate selectively loaded into every third site of a one-dimensional optical lattice was discussed. A two-particle irreducible (2PI) closed-time-path (CTP) effective action was used for the purpose. Three different approximations under the 2PI CTP scheme were considered. The comparisons between these approximations were presented and their range of validity by contrasting them with the exact many-body solution for a moderate number of atoms and wells was determined. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10502947_v69_n3_p033610_Rey
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Approximation theory
Atoms
Correlation methods
Eigenvalues and eigenfunctions
Hamiltonians
Light scattering
Mathematical operators
Parameter estimation
Perturbation techniques
Problem solving
Bose-Einstein condensates
Closed-time-path (CTP)
Optical lattices
Trapped atoms
Quantum theory
spellingShingle Approximation theory
Atoms
Correlation methods
Eigenvalues and eigenfunctions
Hamiltonians
Light scattering
Mathematical operators
Parameter estimation
Perturbation techniques
Problem solving
Bose-Einstein condensates
Closed-time-path (CTP)
Optical lattices
Trapped atoms
Quantum theory
Rey, A.M.
Hu, B.L.
Calzetta, E.
Roura, A.
Clark, C.W.
Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation
topic_facet Approximation theory
Atoms
Correlation methods
Eigenvalues and eigenfunctions
Hamiltonians
Light scattering
Mathematical operators
Parameter estimation
Perturbation techniques
Problem solving
Bose-Einstein condensates
Closed-time-path (CTP)
Optical lattices
Trapped atoms
Quantum theory
description The nonequilibrium dynamics of a Bose-Einstein condensate selectively loaded into every third site of a one-dimensional optical lattice was discussed. A two-particle irreducible (2PI) closed-time-path (CTP) effective action was used for the purpose. Three different approximations under the 2PI CTP scheme were considered. The comparisons between these approximations were presented and their range of validity by contrasting them with the exact many-body solution for a moderate number of atoms and wells was determined.
format JOUR
author Rey, A.M.
Hu, B.L.
Calzetta, E.
Roura, A.
Clark, C.W.
author_facet Rey, A.M.
Hu, B.L.
Calzetta, E.
Roura, A.
Clark, C.W.
author_sort Rey, A.M.
title Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation
title_short Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation
title_full Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation
title_fullStr Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation
title_full_unstemmed Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation
title_sort nonequilibrium dynamics of optical-lattice-loaded bose-einstein-condensate atoms: beyond the hartree-fock-bogoliubov approximation
url http://hdl.handle.net/20.500.12110/paper_10502947_v69_n3_p033610_Rey
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AT hubl nonequilibriumdynamicsofopticallatticeloadedboseeinsteincondensateatomsbeyondthehartreefockbogoliubovapproximation
AT calzettae nonequilibriumdynamicsofopticallatticeloadedboseeinsteincondensateatomsbeyondthehartreefockbogoliubovapproximation
AT rouraa nonequilibriumdynamicsofopticallatticeloadedboseeinsteincondensateatomsbeyondthehartreefockbogoliubovapproximation
AT clarkcw nonequilibriumdynamicsofopticallatticeloadedboseeinsteincondensateatomsbeyondthehartreefockbogoliubovapproximation
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