The Harmonic and Gaussian Approximations in the Potential Energy Landscape Formalism for Quantum Liquids
Yang Zhou,
Gustavo E. Lopez,
Nicolas Giovambattista
Abstract:The potential energy landscape (PEL) formalism has been
used in
the past to describe the behavior of classical low-temperature
liquids and glasses. Here, we extend the PEL formalism to describe
the behavior of liquids and glasses that obey quantum mechanics. In
particular, we focus on the (i) harmonic and (ii) Gaussian approximations
of the PEL, which have been commonly used to describe classical systems,
and show how these approximations can be applied to quantum liquids/glasses.
Contrary to the case of class… Show more
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