scholarly journals Supersolid-superfluid phase separation in the extended Bose-Hubbard model

2021 ◽  
Vol 104 (17) ◽  
Author(s):  
Korbinian Kottmann ◽  
Andreas Haller ◽  
Antonio Acín ◽  
Grigory E. Astrakharchik ◽  
Maciej Lewenstein
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
Superfluid Phase

scholarly journals Phase separation in the two-dimensional Hubbard model: A fixed-node quantum Monte Carlo study

1998 ◽  
Vol 58 (22) ◽  
pp. R14685-R14688 ◽  
Author(s):  
A. C. Cosentini ◽  
M. Capone ◽  
L. Guidoni ◽  
G. B. Bachelet
Keyword(s):  
Monte Carlo ◽  
Phase Separation ◽  
Hubbard Model ◽  
Quantum Monte Carlo ◽  
Monte Carlo Study ◽  
Two Dimensional ◽  
Fixed Node

PHASE SEPARATION IN THE TWO-DIMENSIONAL HUBBARD MODEL

2005 ◽  
Vol 19 (01n03) ◽  
pp. 299-302 ◽  
Author(s):  
M. YU ◽  
H. Q. LIN
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
Coulomb Interaction ◽  
Single Band ◽  
Study Phase ◽  
Two Dimensional ◽  
Stripe Phase ◽  
Hartree Fock ◽  
Band Filling

In this paper, we study phase separation in the two-dimensional single-band Hubbard model with the unrestricted Hartree-Fock(UHF) method and the restricted Hartree-Fock (RHF) method. We perform the calculation for square lattices and rectangle lattices. It is observed that the stripe phase exists and it depends on three aspects: geometry of the lattice, Coulomb interaction U and band filling n. To gain more physical insights, we consider the Hubbard model with spin dependent hoppings: t↑ and t↓, and study the effect of varying [Formula: see text] on the phase separation.

scholarly journals Phase separation instabilities and magnetism in two dimensional square and honeycomb Hubbard model

2015 ◽  
Vol 383 ◽  
pp. 8-12 ◽  
Author(s):  
A.N. Kocharian ◽  
Kun Fang ◽  
G.W. Fernando ◽  
A.V. Balatsky
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
Two Dimensional

scholarly journals Magnetism and phase separation in the ground state of the Hubbard model

2002 ◽  
Vol 27 (4) ◽  
pp. 473-481 ◽  
Author(s):  
R. Zitzler ◽  
Th. Pruschke ◽  
R. Bulla
Keyword(s):  
Phase Separation ◽  
Hubbard Model ◽  
Ground State
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