Symmetry breaking by bi-fundamentals

Understand

We derive all possible symmetry breaking patterns for all possible Higgs fields that can occur in intersecting brane models: bi-fundamentals and rank-2 tensors.

• This is a field-theoretic problem that was already partially solved in 1973 by Ling-Fong Li.
• In that paper the solution was given for rank-2 tensors of orthogonal and unitary group, and U(N x U(M) and O(N) x O(M) bi-fundamentals.
• We extend this first of al to symplectic groups.