2 papers
cond-mat.str-el2005
Correlations at a quantum phase transition in interacting Bose systems
Min-Chul Cha
We have investigated the correlation functions of interacting bosons at the generic superfluid-insulator transition, a prototypical quantum phase transition, in two dimensions in t…
cond-mat1999
Possibility of direct Mott insulator-to-superfluid transitions in weakly disordered boson systems
Sung Yong Park, Ji-Woo Lee, Min-Chul Cha +3
We study the zero-temperature phase transitions of a two-dimensional disordered boson Hubbard model at incommensurate boson densities. Via matrix diagonalization and quantum Monte…