8 research outputs found
Reply to the Comment of Muessel and Rieger on ``Aging Effects in a Lennard-Jones Glass''
This is a Reply to the Comment of Muessel and Rieger cond-mat/9804063 to out
paper on ``Aging Effects in a Lennerd-Jones Glass''. We show that the scaling
function proposed by Muessel and Rieger does not lead to a satisfactory scaling
of our aging data.Comment: 1 page of Revtex, 1 eps figur
Lennard-Jones binary mixture: a thermodynamical approach to glass transition
We study the liquid-glass transition of the Lennard-Jones binary mixture
introduced by Kob and Andersen from a thermodynamic point of view. By means of
the replica approach, translating the problem in the study of a molecular
liquid, we study the phase transition due to the entropy crisis and we find
that the Kauzmann's temperature \tk is . At the end we compare
analytical predictions with numerical results.Comment: 24 pages, 11 postscript figures. Revised version accepted for
pubblication on J. Chem. Phys. Numerical precision of the computations
improve
Aging in a Two-Dimensional Ising Model with Dipolar Interactions
Aging in a two-dimensional Ising spin model with both ferromagnetic exchange
and antiferromagnetic dipolar interactions is established and investigated via
Monte Carlo simulations. The behaviour of the autocorrelation function
is analyzed for different values of the temperature, the waiting
time and the quotient , and being the
strength of exchange and dipolar interactions respectively. Different
behaviours are encountered for at low temperatures as is
varied. Our results show that, depending on the value of , the dynamics
of this non-disordered model is consistent either with a slow domain dynamics
characteristic of ferromagnets or with an activated scenario, like that
proposed for spin glasses.Comment: 4 pages, RevTex, 5 postscript figures; acknowledgment added and some
grammatical corrections in caption