The time-dependent Hartree–Fock–Bogoliubov equations for Bosons
The time-dependent Hartree–Fock–Bogoliubov equations for Bosons
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玻色子的时变 Hartree→Fock→Bogoliubov 方程
DOI:
10.1007/s00028-022-00799-2
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发表时间:
2022
影响因子:
1.4
通讯作者:
Sigal, Israel Michael
中科院分区:
文献类型:
--
作者:
Bach, Volker;Breteaux, Sebastien;Chen, Thomas;Fröhlich, Jürg;Sigal, Israel Michael
We introduce the map of dynamics of quantum Bose gases into dynamics of quasifree states, which we call the “nonlinear quasifree approximation”. We use this map to derive the time-dependent Hartree–Fock–Bogoliubov (HFB) equations describing the dynamics of quantum fluctuations around a Bose–Einstein condensate. We prove global well-posedness of the HFB equations for pair potentials satisfying suitable regularity conditions, and we establish important conservation laws. We show that the space of solutions of the HFB equations has a symplectic structure reminiscent of a Hamiltonian system. This is then used to relate the HFB equations to the HFB eigenvalue equations discussed in the physics literature. We also construct Gibbs equilibrium states at positive temperature associated with the HFB equations, and we establish criteria for the appearance of Bose–Einstein condensation.
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影响因子:
1.7
作者:
Edward Nelson
通讯作者:
Edward Nelson
DOI:
10.3233/asy-2011-1064
发表时间:
2009
期刊:
Asymptot. Anal.
影响因子:
--
作者:
Z. Ammari;S. Breteaux
通讯作者:
S. Breteaux
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Mathieu Lewin;P. T. Nam;N. Rougerie
通讯作者:
N. Rougerie
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
R. Critchley;A. Solomon
通讯作者:
A. Solomon
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
V. Bach;S. Breteaux;H. Knorr;Edmund Menge
通讯作者:
Edmund Menge