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Seminars & Lectures

* TITLE

What is the order parameter of spin glasses?

* SPEAKERS

Name	Affiliation	E-mail
M. A. Moore	Univ. of Manchester U.K.

* HOST(Applicant)

Name	Affiliation	E-mail
-

* DATE / TIME

2005-08-24, 4:00 - 5:30p.m.

* PLACE

KIAS 1423 호

* ABSTRACT

According to the droplet picture of spin glasses, the low-temperature
phase of spin glasses should be replica symmetric. However, analysis
of the stability of this state suggested that it was unstable and this
instability lends support to the Parisi replica symmetry breaking
picture of spin glasses. The finite-size scaling behavior in the critical
region of spin glasses below T_c$ in dimensions greater than 6 can be
determined exactly and for it the replica symmetric solution is unstable
order by order in perturbation theory. Nevertheless the exact solution
can be shown to be replica-symmetric. It is suggested that a similar
mechanism might apply in the low-temperature phase of spin glasses in
less than six dimensions, but that a replica symmetry broken state might
exist in more than six dimensions.?

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