The Effect of Randomness on Long-Range Order in the Two-Dimensional Half-Filled Hubbard Model

1998 ◽  
pp. 133-145
Author(s):  
C. Huscroft ◽  
R. T. Scalettar ◽  
M. Ulmke
Keyword(s):  
Hubbard Model ◽  
Long Range ◽  
Range Order ◽  
Long Range Order ◽  
Two Dimensional

scholarly journals Recovery of long-range order in two-dimensional charge density waves at high temperatures

2021 ◽  
Vol 27 (S1) ◽  
pp. 952-954
Author(s):  
Suk Hyun Sung ◽  
Yin Min Goh ◽  
Noah Schnitzer ◽  
Ismail El Baggari ◽  
Kai Sun ◽  
...  
Keyword(s):  
Charge Density ◽  
Long Range ◽  
High Temperatures ◽  
Charge Density Waves ◽  
Range Order ◽  
Long Range Order ◽  
Two Dimensional ◽  
Density Waves

scholarly journals Off-Diagonal Long-Range Order in Generalized Hubbard Models

1997 ◽  
Vol 11 (11) ◽  
pp. 1311-1335 ◽  
Author(s):  
Kristel Michielsen ◽  
Hans De Raedt
Keyword(s):  
Density Matrix ◽  
Hubbard Model ◽  
Long Range ◽  
Ground State ◽  
Size Dependence ◽  
State Energy ◽  
System Size ◽  
Range Order ◽  
Long Range Order ◽  
Hubbard Models

We present stochastic diagonalization results for the ground-state energy and the largest eigenvalue of the two-fermion density matrix of the BCS reduced Hamiltonian, the Hubbard model, and the Hubbard model with correlated hopping. The system-size dependence of this eigenvalue is used to study the existence of Off-Diagonal Long-Range Order in these models. We show that the model with correlated hopping and repulsive on-site interaction can exhibit Off-Diagonal Long-Range Order. Analytical results for some special limiting cases indicate that Off-Diagonal Long-Range Order not always implies superconductivity.

scholarly journals Long Range Order and Atomic Connectivity in Two-Dimensional Square PbSe Nanocrystal Superlattices

2015 ◽  
Vol 21 (S3) ◽  
pp. 1329-1330 ◽  
Author(s):  
Benjamin H. Savitzky ◽  
Robert Hovden ◽  
Kevin Whitham ◽  
Tobias Hanrath ◽  
Lena F. Kourkoutis
Keyword(s):  
Long Range ◽  
Range Order ◽  
Long Range Order ◽  
Two Dimensional ◽  
Nanocrystal Superlattices

Extended proof of long-range order in the two-dimensional quantum spin-1/2 XXZ-model at T=0

1991 ◽  
Vol 1 (5) ◽  
pp. 647-657 ◽  
Author(s):  
Hans-Aloys Wischmann ◽  
Erwin Müller-Hartmann
Keyword(s):  
Long Range ◽  
Quantum Spin ◽  
Range Order ◽  
Long Range Order ◽  
Two Dimensional ◽  
Xxz Model
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