Condensed Matter Theory

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Order-parameter flow in the SK spin-glass .2. Inclusion of microscopic memory effects

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 29:4 (1996) 763-786

Authors:

SN Laughton, ACC Coolen, D Sherrington
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Painleve transcendent describes quantum correlation function of the XXZ antiferromagnet away from the free-fermion point

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 29:17 (1996) 5619-5626

Authors:

FHL Essler, H Frahm, AR Its, VE Korepin
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Representations of the quadratic algebra and partially asymmetric diffusion with open boundaries

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 29:13 (1996) 3375-3407

Authors:

FHL Essler, V Rittenberg
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Splitting the multiphase point

PHASE TRANSIT 57:1-3 (1996) 49-58

Abstract:

Models with competing interactions, for example the ANNNI model, can have special points at which the ground state is infinitely degenerate, so-called multiphase points. Small perturbations can lift this degeneracy and give rise to infinite sequences of long-period phases. This paper compares the effect of three possible perturbations, quantum fluctuations, thermal fluctuations and the softening of the spins from their quantised positions.
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The supersymmetric t-J model with a boundary

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL 29:19 (1996) 6183-6203
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