Infinite-randomness critical point in the itinerant quantum antiferromagnet

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dc.creatorSknepnek, Rastko
dc.creatorVojta, Thomas
dc.date2002-06-11
dc.date.accessioned2026-07-07T02:45:48Z
dc.date.available2026-07-07T02:45:48Z
dc.descriptionWe study the quantum phase transition in the three-dimensional disordered itinerant antiferromagnet by Monte-Carlo simulations of the order-parameter field theory. We find strong evidence for the transition being controlled by an infinite-randomness fixed point: The dynamical scaling is activated, i.e., the logarithm of the energy scales like a power of the length, implying a dynamical exponent of infinity. The probability distribution of the energy gaps is very broad and becomes broader with increasing system size, even on a logarithmic scale.
dc.description4 pages, 5 eps figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0206161
dc.identifierhttp://arxiv.org/abs/cond-mat/0206161
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/19431
dc.subjectDisordered Systems and Neural Networks
dc.subjectStrongly Correlated Electrons
dc.titleInfinite-randomness critical point in the itinerant quantum antiferromagnet
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