Wigner $ D $ matrix equivalent for cyclic symmetry
Posted by Ian Gershon Teixeira, at physics.stackexchange.com,
$\newcommand{\ket}[1]{\left|#1\right\rangle}$The action of $ g \in SU(2) $ on a spin $ j $ system (with a Hilbert space of size …
Dimension of singlet subspace of $2N$ identical spin-1/2 particles
Posted by Zhengyuan Yue, at physics.stackexchange.com,
Consider a quantum system of $2N$ identical spin 1/2 particles, each having a 2D Hilbert space $V$. The total Hilbert space is…
Constructing gauge invariants
Posted by vichitravir, at physics.stackexchange.com,
Is there an efficient way for constructing gauge invariants given the number of operators one can use is fixed. For example, if…
Dimension of spin zero Hilbert subspace
Posted by MRU, at physics.stackexchange.com,
Consider a system of 4 different spin-5/2 particles, each transforming in the dimension-6 irreducible representation of $SU(2)$.