info:eu-repo/semantics/article
Unconventional critical activated scaling of two-dimensional quantum spin glasses
Fecha
2016-07Registro en:
Matoz Fernandez, Daniel Alejandro; Romá, Federico José; Unconventional critical activated scaling of two-dimensional quantum spin glasses; American Physical Society; Physical Review B; 94; 2; 7-2016; 1-6; 024201
2469-9969
CONICET Digital
CONICET
Autor
Matoz Fernandez, Daniel Alejandro
Romá, Federico José
Resumen
We study the critical behavior of two-dimensional short-range quantum spin glasses by numerical simulations. Using a parallel tempering algorithm, we calculate the Binder cumulant for the Ising spin glass in a transverse magnetic field with two different short-range bond distributions, the bimodal and the Gaussian ones. Through an exhaustive finite-size analysis, we show that the cumulant probably follows an unconventional activated scaling, which we interpret as new evidence supporting the hypothesis that the quantum critical behavior is governed by an infinite randomness fixed point.