scholarly journals Doped two-leg ladder with ring exchange: Exact diagonalization and density matrix renormalization group computations

2005 ◽  
Vol 72 (1) ◽  
Author(s):  
G. Roux ◽  
S. R. White ◽  
S. Capponi ◽  
A. Läuchli ◽  
D. Poilblanc
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