On multi-spin flip critical dynamics of one-dimensional Ising models

The critical dynamics of an Ising ferromagnetic chain with two different coupling constants ( J 1⩾ J 2) is studied. Multi-spin flip processes are considered both for Glauber and Kawasaki dynamics. It is found that the dynamical critical exponent z is nonuniversal and depends on the ratio J 1 J 2 as...

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Bibliographic Details
Published in:Physics letters. A 1986-11, Vol.119 (1), p.37-39
Main Author: Kamphorst Leal Da Silva, J.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Critical-point effects, specific heats, short-range order
Exact sciences and technology
Magnetic properties and materials
Physics
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Summary:The critical dynamics of an Ising ferromagnetic chain with two different coupling constants ( J 1⩾ J 2) is studied. Multi-spin flip processes are considered both for Glauber and Kawasaki dynamics. It is found that the dynamical critical exponent z is nonuniversal and depends on the ratio J 1 J 2 as well as the choice of the multi-spin flip process.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(86)90641-9