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Finite-Temperature Transition into a Power-Law Spin Phase with an Extensive Zero-Point Entropy

P. Chandra·P. Coleman·L. B. Ioffe
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Abstract

We introduce an $xy$ generalization of the frustrated Ising model on a triangular lattice. The presence of continuous degrees of freedom stabilizes a {\em finite-temperature} spin state with {\em power-law} discrete spin correlations and an extensive zero-point entropy. In this phase, the unquenched degrees of freedom can be described by a fluctuating surface with logarithmic height correlations. Finite-size Monte Carlo simulations have been used to characterize the exponents of the transition and the dynamics of the low-temperature phase.

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P. Chandra, P. Coleman, L. B. Ioffe. 1993-12-14. Finite-Temperature Transition into a Power-Law Spin Phase with an Extensive Zero-Point Entropy. https://doi.org/10.1103/physrevb.49.12897

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