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Dynamics of strongly correlated fermions: Ab initio results for two and three dimensions

Schluenzen, N.; Hermanns, S.; Bonitz, M. and Verdozzi, Claudio LU (2016) In Physical Review B (Condensed Matter and Materials Physics) 93(3).
Abstract
Quantum transport of strongly correlated fermions is of central interest in condensed matter physics. While the stationary expansion dynamics have recently been measured with cold atoms in 2D optical lattices, ab initio simulations have been limited to 1D setups so far. Here, we present the first precise fermionic quantum dynamics simulations for 2D and 3D. The simulations are based on nonequilibrium Green functions and incorporate strong correlations via T-matrix self-energies. The simulations predict the short-time dynamics, and we discover a universal scaling of the expansion velocity with the particle number. Our predictions can be verified experimentally using the recently developed fermionic atom microscopes.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review B (Condensed Matter and Materials Physics)
volume
93
issue
3
publisher
American Physical Society
external identifiers
  • wos:000367893400001
  • scopus:84955276013
ISSN
1098-0121
DOI
10.1103/PhysRevB.93.035107
language
English
LU publication?
yes
id
b7eb1b7d-002a-4164-807a-99cb533b5639 (old id 8754658)
date added to LUP
2016-02-23 07:24:38
date last changed
2017-10-08 04:01:22
@article{b7eb1b7d-002a-4164-807a-99cb533b5639,
  abstract     = {Quantum transport of strongly correlated fermions is of central interest in condensed matter physics. While the stationary expansion dynamics have recently been measured with cold atoms in 2D optical lattices, ab initio simulations have been limited to 1D setups so far. Here, we present the first precise fermionic quantum dynamics simulations for 2D and 3D. The simulations are based on nonequilibrium Green functions and incorporate strong correlations via T-matrix self-energies. The simulations predict the short-time dynamics, and we discover a universal scaling of the expansion velocity with the particle number. Our predictions can be verified experimentally using the recently developed fermionic atom microscopes.},
  articleno    = {035107},
  author       = {Schluenzen, N. and Hermanns, S. and Bonitz, M. and Verdozzi, Claudio},
  issn         = {1098-0121},
  language     = {eng},
  number       = {3},
  publisher    = {American Physical Society},
  series       = {Physical Review B (Condensed Matter and Materials Physics)},
  title        = {Dynamics of strongly correlated fermions: Ab initio results for two and three dimensions},
  url          = {http://dx.doi.org/10.1103/PhysRevB.93.035107},
  volume       = {93},
  year         = {2016},
}