TY - JOUR
T1 - Entropic origin of the growth of relaxation times in simple glassy liquids
AU - Dasgupta, Chandan
AU - Valls, Oriol T.
PY - 1998
Y1 - 1998
N2 - Transitions between “glassy” local minima of a model free-energy functional for a dense hard-sphere system are studied numerically using a “microcanonical” Monte Carlo method that enables us to obtain the transition probability as a function of the free energy and the Monte Carlo “time.” The growth of the height of the effective free-energy barrier with density is found to be consistent with a Vogel-Fulcher law. The dependence of the transition probability on time indicates that this growth is primarily due to an increase in the difficulty of finding low-free-energy paths to other minima.
AB - Transitions between “glassy” local minima of a model free-energy functional for a dense hard-sphere system are studied numerically using a “microcanonical” Monte Carlo method that enables us to obtain the transition probability as a function of the free energy and the Monte Carlo “time.” The growth of the height of the effective free-energy barrier with density is found to be consistent with a Vogel-Fulcher law. The dependence of the transition probability on time indicates that this growth is primarily due to an increase in the difficulty of finding low-free-energy paths to other minima.
UR - http://www.scopus.com/inward/record.url?scp=0000468863&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000468863&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.58.801
DO - 10.1103/PhysRevE.58.801
M3 - Article
AN - SCOPUS:0000468863
SN - 1063-651X
VL - 58
SP - 801
EP - 804
JO - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
JF - Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
IS - 1
ER -