Towards overcoming the entanglement barrier when simulating long-time evolution

Understand

Quantum many-body systems out of equilibrium pose some of the most intriguing questions in physics.

• Unfortunately, numerically keeping track of time evolution of states under Hamiltonian dynamics constitutes a severe challenge for all known methods.
• Prominently, tensor network methods are marred by an entanglement blowup, which allows to simulate systems following global quenches only to constant time.
• In this work, we present a scheme that allows to significantly extend the simulation time for interacting fermionic or equivalent spin systems.