Common and not so common high-energy theory methods for condensed matter physics

Understand

This chapter is a collection of techniques, warnings, facts and ideas that are sometimes regarded as theoretical curiosities in high-energy physics but have important consequences in condensed matter physics.

• In particular, we describe theories that have the property of having finite but undetermined radiative corrections that also happen to describe topological semi-metallic phases in condensed matter.
• In the process, we describe typical methods in high-energy physics that illustrate the working principles to describe a given phase of matter and its response to external fields.