Low-energy fixed points of random quantum spin chains
نویسندگان
چکیده
منابع مشابه
Low-energy fixed points of random Heisenberg models
The effect of quenched disorder on the low-energy and low-temperature properties of various twoand three-dimensional Heisenberg models is studied by a numerical strong disorder renormalization-group method. For strong enough disorder we have identified two relevant fixed points, in which the gap exponent, v , describing the low-energy tail of the gap distribution P(D);D is independent of disord...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1997
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.55.12578