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arXiv · 1711.07972

Dynamic inhomogeneities and phase separation after quantum quenches in strongly correlated systems

Gia-Wei Chern
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Abstract

We present a Gutzwiller von Neumann dynamics (GvND) method for simulating equilibrium and nonequilibrium phenomena in strongly correlated electron systems. Our approach is a real-space formulation of the time-dependent Gutzwiller approximation method. Applying the GvND method to simulate interaction quenches in the Peierls-Hubbard model, we demonstrate the amplification of initial inhomogeneities, which in turn results in the collapse of quench-induced synchronized oscillation. Moreover, we find a dynamical phase transition separating two quasi-stationary regimes with rather distinct spatial distributions of physical quantities after the collapsed oscillation. In particular, in the strong-coupling regime, the system exhibits a dynamic phase separation in the quasi-stationary state. Our results thus underscore the importance of spatial fluctuations in the nonequilibrium dynamics of strongly correlated systems.

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Gia-Wei Chern. 2017-11-21. Dynamic inhomogeneities and phase separation after quantum quenches in strongly correlated systems. https://arxiv.org/abs/1711.07972

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