New posts in Group Representations

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

Chirality of the Electromagnetic Field Tensor

Group representations and active/passive transformations

Confusion about rotations of quantum states: $SO(3)$ versus $SU(2)$

What is the difference between the dimension of a group and the dimension of its representation?

Is there a "canonical" way to parameterize elements of $\operatorname{SO}(N)$?

Why are symmetry transformations connected to the identity necessarily represented by linear unitary operators?

Unitary irreducible representations of the little group $SO(3)$

What does it mean if an intertwiner respects a group action?

In what representation do fields in a gauge theory lie?