Quantum quenches and competing orders: I. Time-dependent Hartree-Fock+BCS theory

Abstract

We study the non-equlibrium dynamics of an electronic model of competing bond density wave order and $d$-wave superconductivity. In a time-dependent Hartree-Fock+BCS approximation, the dynamics reduces to the equations of motion of operators realizing the generators of SU(4) at each pair of momenta, $(\mathbf{k},-\mathbf{k})$, in the Brillouin zone. We compare the results of numerical studies of our model with recent picosecond optical experiments.

arXiv commentThis paper has been combined with arXiv:1402.0875