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Title: Fluctuations in two-dimensional six-vertex systems

Conference ·
OSTI ID:6146352

The character of polarization correlations in six-vertex systems is discussed. With the aid of a connection between the 1-d Heisenberg--Ising chain and the six-vertex problem, existing results for the chain correlations are used to obtain information about long-wavelength polarization correlations in six-vertex models. These results are compared with a neutron scattering study of 2-d polarization correlations in the layered compound copper formate tetrahydrate. Because the six-vertex model is equivalent to a particular roughening model, these results also explicitly predict the critical behavior of that roughening model just above its roughening temperature. The results correspond to the predictions of Kosterlitz and Thouless for the phase transition in the 2-d Coulomb gas. 5 figures.

Research Organization:
Brookhaven National Lab., Upton, NY (USA); State Univ. of New York, Stony Brook (USA). Inst. for Theoretical Physics
Sponsoring Organization:
USDOE
DOE Contract Number:
EY-76-C-02-0016
OSTI ID:
6146352
Report Number(s):
BNL-26196; CONF-790487-1; TRN: 79-016658
Resource Relation:
Conference: NATO advanced study Institute on ordering in strongly - fluctuating condensed - matter systems, Geilo, Norway, 16 Apr 1979
Country of Publication:
United States
Language:
English