scholarly journals Semimetal–Mott insulator quantum phase transition of the Hubbard model on the honeycomb lattice

2020 ◽  
Vol 102 (24) ◽  
Author(s):  
Johann Ostmeyer ◽  
Evan Berkowitz ◽  
Stefan Krieg ◽  
Timo A. Lähde ◽  
Thomas Luu ◽  
...  
Keyword(s):  
Phase Transition ◽  
Hubbard Model ◽  
Quantum Phase Transition ◽  
Mott Insulator ◽  
Quantum Phase ◽  
Honeycomb Lattice

BOSONIC GUTZWILLER PROJECTION APPROACH FOR THE BOSE–HUBBARD MODEL

2007 ◽  
Vol 21 (02) ◽  
pp. 249-264 ◽  
Author(s):  
SU-PENG KOU ◽  
RONG-HUA LI
Keyword(s):  
Phase Transition ◽  
Hubbard Model ◽  
Quantum Phase Transition ◽  
Optical Lattice ◽  
Mott Insulator ◽  
Quantum Phase ◽  
Strongly Correlated ◽  
Superfluid State ◽  
Projection Approach ◽  
Occupation Rate

In this paper, a new Bosonic Gutzwiller projection approach is proposed to study the strongly correlated bosons in optical lattice. In this method, there exist many variational parameters which make us calculate the physical characters of states, including the double occupation rate and the higher occupation rates. Based on this approach, a quantum phase transition from superfluid state to Mott insulator state is obtained for the homogenous phase at unit filling.

scholarly journals Superfluid–Mott-insulator quantum phase transition of light in a two-mode cavity array with ultrastrong coupling

2017 ◽  
Vol 95 (3) ◽  
Author(s):  
Jingtao Fan ◽  
Yuanwei Zhang ◽  
Lirong Wang ◽  
Feng Mei ◽  
Gang Chen ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Mott Insulator ◽  
Quantum Phase ◽  
Cavity Array
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