Random quantum magnets with broad disorder distribution
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چکیده
منابع مشابه
Random quantum magnets with broad disorder distribution
We study the critical behavior of Ising quantum magnets with broadly distributed random couplings (J), such that P (lnJ) ∼ | ln J |, α > 1, for large | lnJ | (Lévy flight statistics). For sufficiently broad distributions, α < αc, the critical behavior is controlled by a line of fixed points, where the critical exponents vary with the Lévy index, α. In one dimension, with αc = 2, we obtaind seve...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2001
ISSN: 1434-6028
DOI: 10.1007/pl00011100