A critical point in thermodynamics refers to a condition where the boundary
between two phases ceases to exist. Critical points terminating the
liquid-gas or liquid-liquid transition boundaries are common. Following the
argument presented by Landau, it is believed that a critical point in a
symmetry-breaking transition, like between a liquid and a crystal, is
impossible because a discrete symmetry cannot be continuously transformed
into the continuous one. In this talk, I present a molecular dynamics
simulation demonstrating the existence of a critical point between a liquid
and a crystal.
This result has been published in: Journ. Chem. Phys. 131, 104502
(2009).
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