Why is it interesting?
quantum phase transitions that studies the changes that may occur in the macroscopic properties of matter at zero temperature (i.e., T = 0) due to changes in the parameters characterizing the system.
https://arxiv.org/pdf/cond-mat/0207106.pdf
Layman
Explanations in this section should contain no formulas, but instead colloquial things like you would hear them during a coffee break or at a cocktail party.
Student
Quantum Phase Transitions by Subir Sachdev
Researcher
The motto in this section is: the higher the level of abstraction, the better.
Examples
History