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cond-mat.stat-mech2007
Order-Parameter Correlation Functions in Quantum Critical Phenomena
Min-Chul Cha, Gerardo Ortiz
We investigate the functional form of the order-parameter (two-point) correlation function in quantum critical phenomena. Contrary to the common lore, when there is no particle-hol…
cond-mat.stat-mech2005
Superfluid-insulator transitions of two-species Bosons in an optical lattice
A. Isacsson, Min-Chul Cha, K. Sengupta +1
We consider a realization of the two-species bosonic Hubbard model with variable interspecies interaction and hopping strength. We analyze the superfluid-insulator (SI) transition…