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The physics of critical phenomena is the physics of systems close to a critical point, like the critical temperature in a ferromagnetic transition or the critical point of a gas-liquid transition. Examples of critical phenomena include dynamical slowing down, divergence of correlation length and ergodicity breaking.

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Phase diagram of the $Z_N$-invariant clock model

The phase diagram for $q > 3$ clock model consists of a disordered phase, an $XY$-like phase and a fully ordered phase. A 2018 paper by Chatterjee, Puri and Rual cover this [1]. Essentially, the upper …
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-1 votes

What is the topology of a phase diagram?

Based on intuition, I do not think it is possible for phases to be disconnected, and to understand this I think we need a better idea of what we mean when we call something a "phase." Typically, we th …
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