CMT Forum: Paul Fendley

22 May 2024
Seminars and colloquia
Simpkins Lee

Paul Fendley (Oxford)

Seminar series
CMT Forum
Knowledge of physics?
Yes, knowledge of physics required
For more information contact

Free fermions in disguise

Free fermions are ubiquitous in theoretical physics. Typically such models are found by expressing the Hamiltonian and/or action as a sum or integral over bilinears of local fermionic operators or fields, sometimes requiring a Jordan-Wigner transformation. I describe models that become free fermionic only after under a much subtler transformation that is both non-local and non-linear in the original interacting fermions. I also will explain how encoding Hamiltonians in a graph allows one to identify models solvable by this approach.