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

Wenbo Fu; Ling-Yan Hung; Subir Sachdev

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arXiv · 1401.7674

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

Wenbo Fu·Ling-Yan Hung·Subir Sachdev

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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, $(\boldsymbol{k}, -\boldsymbol{k})$, in the Brillouin zone. We compare the results of numerical studies of our model with recent picosecond optical experiments.

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Wenbo Fu, Ling-Yan Hung, Subir Sachdev. 2014-07-15. Quantum quenches and competing orders: I. Time-dependent Hartree-Fock+BCS theory. https://arxiv.org/abs/1401.7674

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