scholarly journals Numerically exact mimicking of quantum gas microscopy for interacting lattice fermions

2021 ◽  
Vol 104 (7) ◽  
Author(s):  
Stephan Humeniuk ◽  
Yuan Wan
Keyword(s):  
Quantum Gas ◽  
Lattice Fermions

CORRELATION INTERACTIONS OF QUANTUM PARTICLES

2019 ◽  
Author(s):  
Evgeniy Krasnopevtsev
Keyword(s):  
Thermal State ◽  
Mutual Interference ◽  
Quantum Gas ◽  
Quantum Particles

Correlation of particles number in an equilibrium thermal state of quantum gas is caused mutual «interference repulsion» and antibunching at fermions and «interference attraction» and bunching at bosons.

scholarly journals Hamiltonian models of lattice fermions solvable by the meron-cluster algorithm

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Hanqing Liu ◽  
Shailesh Chandrasekharan ◽  
Ribhu K. Kaul
Keyword(s):  
Cluster Algorithm ◽  
Hamiltonian Models ◽  
Lattice Fermions

scholarly journals Casimir effect for lattice fermions

2020 ◽  
Vol 809 ◽  
pp. 135713
Author(s):  
Tsutomu Ishikawa ◽  
Katsumasa Nakayama ◽  
Kei Suzuki
Keyword(s):  
Casimir Effect ◽  
Lattice Fermions

scholarly journals More on random-lattice fermions

1995 ◽  
Vol 42 (1-3) ◽  
pp. 624-626
Author(s):  
T.D. Kieu ◽  
J.F. Markham ◽  
C.B. Paranavitane
Keyword(s):  
Random Lattice ◽  
Lattice Fermions

scholarly journals Polaron Problems in Ultracold Atoms: Role of a Fermi Sea across Different Spatial Dimensions and Quantum Fluctuations of a Bose Medium

Atoms ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 18
Author(s):  
Hiroyuki Tajima ◽  
Junichi Takahashi ◽  
Simeon Mistakidis ◽  
Eiji Nakano ◽  
Kei Iida
Keyword(s):  
Spectral Function ◽  
Einstein Condensate ◽  
Three Dimensions ◽  
Quantum Gas ◽  
Many Body ◽  
Bose Einstein Condensate ◽  
Spatial Dimensions ◽  
Three Body ◽  
Bose Einstein ◽  
The Impact

The notion of a polaron, originally introduced in the context of electrons in ionic lattices, helps us to understand how a quantum impurity behaves when being immersed in and interacting with a many-body background. We discuss the impact of the impurities on the medium particles by considering feedback effects from polarons that can be realized in ultracold quantum gas experiments. In particular, we exemplify the modifications of the medium in the presence of either Fermi or Bose polarons. Regarding Fermi polarons we present a corresponding many-body diagrammatic approach operating at finite temperatures and discuss how mediated two- and three-body interactions are implemented within this framework. Utilizing this approach, we analyze the behavior of the spectral function of Fermi polarons at finite temperature by varying impurity-medium interactions as well as spatial dimensions from three to one. Interestingly, we reveal that the spectral function of the medium atoms could be a useful quantity for analyzing the transition/crossover from attractive polarons to molecules in three-dimensions. As for the Bose polaron, we showcase the depletion of the background Bose-Einstein condensate in the vicinity of the impurity atom. Such spatial modulations would be important for future investigations regarding the quantification of interpolaron correlations in Bose polaron problems.

scholarly journals Correlation effects in the quench-induced phase separation dynamics of a two species ultracold quantum gas

2018 ◽  
Vol 20 (4) ◽  
pp. 043052 ◽  
Author(s):  
S I Mistakidis ◽  
G C Katsimiga ◽  
P G Kevrekidis ◽  
P Schmelcher
Keyword(s):  
Phase Separation ◽  
Quantum Gas ◽  
Correlation Effects
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