Quantum generalized hydrodynamics of the Tonks–Girardeau gas: density fluctuations and entanglement entropy
Quantum generalized hydrodynamics of the Tonks–Girardeau gas: density fluctuations and entanglement entropy
We apply the theory of Quantum Generalized Hydrodynamics (QGHD) introduced in [Phys. Rev. Lett. 124, 140603 (2020)] to derive asymptotically exact results for the density fluctuations and the entanglement entropy of a one-dimensional trapped Bose gas in the Tonks-Girardeau (TG) or hard-core limit, after a trap quench from a double …