A What are the methods for calculating quantum phase transition?

[nik9039]

Trying to understand what the math methods are exist to determine quantum phase transition and how I can calculate it, by what methods.

 

[vanhees71]

I don't know what you are talking about and what the meaning of your diagram is. Do you have a concrete physical problem in mind? Asking a clearly defined question is usually more than half way to a solution!

 

[Demystifier]

Trying to understand what the math methods are exist to determine quantum phase transition and how I can calculate it, by what methods.

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