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Title:

Quantum quench in two dimensions using the variational Baeriswyl wave function

Document type:
Zeitschriftenaufsatz
Author(s):
Dóra, Balázs; Haque, Masudul; Pollmann, Frank; Hetényi, Balázs
Abstract:
By combining the Baeriswyl wave function with equilibrium and time-dependent variational principles, we develop a nonequilibrium formalism to study quantum quenches for two-dimensional spinless fermions with nearest-neighbor hopping and repulsion. The variational ground-state energy, the charge-density wave (CDW) order parameter, and the short-time dynamics agree convincingly with the results of numerically exact simulations. We find that, depending on the initial and final interaction strength,...     »
Journal title:
Physical Review B 2016-03
Year:
2016
Journal volume:
93
Journal issue:
11
Fulltext / DOI:
doi:10.1103/physrevb.93.115124
Publisher:
American Physical Society (APS)
E-ISSN:
2469-99502469-9969
Date of publication:
15.03.2016
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