Numerical evidence of the double-Griffiths phase of the random quantum Ashkin-Teller chain

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Numerical evidence of the double-Griffiths phase of the random quantum Ashkin-Teller chain

The random quantum Ashkin-Teller chain is studied numerically by means of time-dependent Density-Matrix Renormalization Group. The critical lines are estimated as the location of the peaks of the integrated autocorrelation times, computed from spin-spin and polarization-polarization autocorrelation functions. Disorder fluctuations of magnetization and polarization are observed to be maximum on ...

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ژورنال

عنوان ژورنال: The European Physical Journal B

سال: 2016

ISSN: 1434-6028,1434-6036

DOI: 10.1140/epjb/e2015-60593-3