Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2004-05-31
J. Chem. Phys. 126, 074502 (2007)
Physics
Condensed Matter
Statistical Mechanics
Scientific paper
10.1063/1.2434963
A master equation description of the inherent dynamics is used to calculate the frequency-dependent linear thermo-visco-elastic response functions of a glass-forming liquid. From the imaginary parts of the isobaric specific heat, isothermal bulk modulus, and isobaric thermal expansion coefficient, we define a quantity $\Lambda_{Tp}(\omega)$ with the property that $\Lambda_{Tp}(\omega)=1$ is equivalent to having a one-parameter description of the linear thermo-visco-elastic response. This provides an alternative to the well-known criterion based on the Prigogine-Defay ratio.
Christensen Tage
Dyre Jeppe C.
Ellegaard Niels L.
Olsen Niels Boye
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