Archivio Istituzionale della RicercaAccording to a recent proposal, we describe the quantum dynamics of the Hubbard model at the semiclassical level by implementing the Time-Dependent Variational Principle (TDVP) approach on appropriate macroscopic wave-functions constructed in terms of su(2)-coherent states. Within the TDVP procedure, such states turn out to include a time-dependent quantum phase, part of which can be recognized as Berry's phase. In particular, here we investigate the dynamics of the weakly excited states with non-vanishing pairing, away from half-filling and for repulsive Coulomb interaction.
Dynamics of the Hubbard model: weakly excited pairing states / Montorsi, Arianna; Penna, Vittorio. - In: NUOVO CIMENTO DELLA SOCIETÀ ITALIANA DI FISICA. D CONDENSED MATTER, ATOMIC, MOLECULAR AND CHEMICAL PHYSICS, BIOPHYSICS. - ISSN 0392-6737. - 19:(1997), pp. 1341-1344.
Dynamics of the Hubbard model: weakly excited pairing states
MONTORSI, Arianna;PENNA, Vittorio
1997
Abstract
According to a recent proposal, we describe the quantum dynamics of the Hubbard model at the semiclassical level by implementing the Time-Dependent Variational Principle (TDVP) approach on appropriate macroscopic wave-functions constructed in terms of su(2)-coherent states. Within the TDVP procedure, such states turn out to include a time-dependent quantum phase, part of which can be recognized as Berry's phase. In particular, here we investigate the dynamics of the weakly excited states with non-vanishing pairing, away from half-filling and for repulsive Coulomb interaction.
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https://hdl.handle.net/11583/1404151
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