Exponential Decay of Correlations in the 2D Random Field Ising Model
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DOI: 10.1007/s10955-019-02401-5
Abstract: An extension of the Ising spin configurations to continuous functions is used for an exact representation of the random field Ising model’s order parameter in terms of disagreement percolation. This facilitates an extension of the… read more here.
Keywords: exponential decay; random field; field ising; ising model ... See more keywords
Sharp entanglement thresholds in the logarithmic negativity of disjoint blocks in the transverse-field Ising chain
Sign Up to like & getrecommendations! Published in 2018 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aad9ba
Abstract: Entanglement has developed into an essential concept for the characterization of phases and phase transitions in ground states of quantum many-body systems. In this work, we use the logarithmic negativity to study the spatial entanglement… read more here.
Keywords: disjoint blocks; ising chain; logarithmic negativity; field ising ... See more keywords
Level crossings induced by a longitudinal coupling in the transverse field Ising chain
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DOI: 10.1103/physrevb.95.174404
Abstract: We study the effect of antiferromagnetic longitudinal coupling on the one-dimensional transverse field Ising model with nearest-neighbor couplings. In the topological phase where, in the thermodynamic limit, the ground state is twofold degenerate, we show… read more here.
Keywords: field ising; level crossings; longitudinal coupling; transverse field ... See more keywords
Gaps between avalanches in one-dimensional random-field Ising models.
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DOI: 10.1103/physreve.96.032107
Abstract: We analyze the statistics of gaps (ΔH) between successive avalanches in one-dimensional random-field Ising models (RFIMs) in an external field H at zero temperature. In the first part of the paper we study the nearest-neighbor… read more here.
Keywords: dimensional random; random field; field; one dimensional ... See more keywords
Griffiths-McCoy singularities in the dilute transverse-field Ising model: A numerical linked cluster expansion study.
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DOI: 10.1103/physreve.99.032129
Abstract: We use numerical linked cluster expansions (NLCEs) to study the site-diluted transverse-field Ising model on the square lattice at T=0. NLCE with a self-consistent mean field on the boundary of the clusters is used to… read more here.
Keywords: field; linked cluster; transverse field; ising model ... See more keywords