Density-matrix electronic-structure method with linear system-size scaling

1993 ◽  
Vol 47 (16) ◽  
pp. 10891-10894 ◽  
Author(s):  
X.-P. Li ◽  
R. W. Nunes ◽  
David Vanderbilt
1995 ◽  
Vol 51 (3) ◽  
pp. 1456-1476 ◽  
Author(s):  
Pablo Ordejón ◽  
David A. Drabold ◽  
Richard M. Martin ◽  
Matthew P. Grumbach

1994 ◽  
Vol 6 (43) ◽  
pp. 9153-9172 ◽  
Author(s):  
S -Y Qiu ◽  
C Z Wang ◽  
K M Ho ◽  
C T Chan

1997 ◽  
Vol 11 (11) ◽  
pp. 1311-1335 ◽  
Author(s):  
Kristel Michielsen ◽  
Hans De Raedt

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.


2015 ◽  
Vol 108 (2) ◽  
pp. 150a
Author(s):  
Chong He Yue ◽  
Lock Chew
Keyword(s):  

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