New posts in Group Theory

Why do all fields in a QFT transform like *irreducible* representations of some group?

Generator for parity?

Why Lie algebras if what we care about in physics are groups?

What is a Borel subalgebra?

Three spin states of a spin-1 particle

Why intuitively, do we define symmetries as transformations that map solutions of the equations of motion into other solutions?

Weyl spinor representations and the Lorentz group

Why are Spin 1/2 particles invariant to $4\pi$ rotation loops while Spin 1 particles are invariant to $2\pi$ loops?

What precisely is a *classical* spin-1/2 particle?

Spin statistics from the fundamental group of $SO(D)$