期刊
PHYSICAL REVIEW B
卷 61, 期 21, 页码 14723-14726出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.61.14723
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I obtain the inverse of the correlation length exponent at the superfluid-Bose-glass quantum critical point as a series in a small parameter root d-1, with d being the dimensionality of the system, and compute the two lowest terms. For d=2, I find v(s)=0.81 and v(c)=1.03 for short-range and Coulomb interactions between bosons, respectively. When combined with the exact Values of the dynamical critical exponents, these results are in quantitative agreement with experiments on onset of superfluidity in He-4 in porous glasses and on the superconductor-insulator transition in homogeneous metallic films.
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