Nonzero-temperature transport near quantum critical points
نویسندگان
چکیده
منابع مشابه
Non - zero temperature transport near quantum critical points
We describe the nature of charge transport at non-zero temperatures (T ) above the two-dimensional (d) superfluid-insulator quantum critical point. We argue that the transport is characterized by inelastic collisions among thermally excited carriers at a rate of order kBT/h̄. This implies that the transport at frequencies ω kBT/h̄ is in the hydrodynamic, collision-dominated (or ‘incoherent’) regi...
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The physics of non-zero temperature dynamics and transport near quantum-critical points is discussed by a detailed study of the O(N)symmetric, relativistic, quantum field theory of a N -component scalar field in d spatial dimensions. A great deal of insight is gained from a simple, exact solution of the long-time dynamics for the N = 1 d = 1 case: this model describes the critical point of the ...
متن کامل2 1 M ay 1 99 7 Non - zero temperature transport near quantum critical points
We describe the nature of charge transport at non-zero temperatures (T ) above the two-dimensional (d) superfluid-insulator quantum critical point. We argue that the transport is characterized by inelastic collisions among thermally excited carriers at a rate of order kBT/h̄. This implies that the transport at frequencies ω ≪ kBT/h̄ is in the hydrodynamic, collision-dominated (or ‘incoherent’) re...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 1997
ISSN: 0163-1829,1095-3795
DOI: 10.1103/physrevb.56.8714