Europhys. Lett., 62 (6) , pp. 869-875 (2003)
Frequency-domain study of relaxation in a spin glass model for the structural glass transitionF. Rao1, A. Crisanti2 and F. Ritort3
1 Department of Biochemistry, University of Zurich Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
2 Dipartimento di Fisica, Università di Roma "La Sapienza" and INFM, unità di Roma, I and SMC - P. le A. Moro 2, 00185, Roma, Italy
3 Departament de Física Fonamental, Facultat de Física, Universitat de Barcelona Diagonal 647, 08028 Barcelona, Spain
(Received 28 January 2003; accepted in final form 22 April 2003)
We have computed the time-dependent susceptibility for the finite-size mean-field random orthogonal model (ROM). We find that for temperatures above the mode-coupling temperature, the imaginary part of the susceptibility obeys the scaling forms proposed for glass-forming liquids. Furthermore, as the temperature is lowered the peak frequency of decreases, following a Vogel-Fulcher law with a critical temperature remarkably close to the known critical temperature , where the configurational entropy vanishes.
64.60.-i - General studies of phase transitions.
64.70.Pf - Glass transitions.
75.10.Nr - Spin-glass and other random models.
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