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Elastic behavior in a supercooled liquid: analysis of viscoelasticity using an extended mode coupling model
Das1
1School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
Abstract:
The transverse current correlations are analyzed using the formalism of extended mode coupling theory. The undercooled liquid can sustain shear waves up to a minimum wave number. With the increase of density this wave number decreases, indicating a growing length scale that is related to the dynamics. The speed of the propagating shear waves goes to zero approaching a critical wave number. The maximum wavelength shows an initial enhancement approaching the mode coupling transition and finally grows at a slower rate as the sharp transition is cut off.
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