Dynamical phase transition in correlated fermionic lattice systems

Details Dynamical phase transition in correlated fermionic lattice systems Dynamical phase transition in correlated fermionic lattice systems

2009-04-06

arxiv.org/abs/0904.0976v1

Phys. Rev. Lett. 103, 056403 (2009)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.103.056403

We use non-equilibrium dynamical mean-field theory to demonstrate the existence of a critical interaction in the real-time dynamics of the Hubbard model after an interaction quench. The critical point is characterized by fast thermalization and separates weak-coupling and strong-coupling regimes in which the relaxation is delayed due to prethermalization on intermediate timescales. This dynamical phase transition should be observable in experiments on trapped fermionic atoms.

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