Low-Temperature Relaxation and Entropic Barriers in Supercooled Liquids
Udayan Mohanty 1,
Irwin Oppenheim 2, and
Clifford H. Taubes 3
1 Eugene F. Merkert Chemistry Center, Department of Chemistry, Boston College, Chestnut Hill, MA 02167, USA.
2 Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
3 Department of Mathematics, Harvard University, Cambridge, MA 02138, USA.
The low-temperature relaxation dynamics of supercooled liquids are a long-standing theoretical problem of considerable interest. The vast amount of experimental data on such liquids indicates that viscosity and diffusion in supercooled liquids are non-Arrhenius over a wide range of temperatures. The non-Arrhenius temperature dependence of the relaxation time of the slow modes in glass-forming liquids is investigated in connection with the topology of the potential energy landscape in configuration space. An analogy is made between the derived dynamical equations and Cooper's formulation of the pair equation in superconductivity.
Submitted on July 8, 1994
Accepted on September 1, 1994
