Exact entanglement growth of a one-dimensional hard-core quantum gas during a free expansion
Exact entanglement growth of a one-dimensional hard-core quantum gas during a free expansion
We consider the non-equilibrium dynamics of the entanglement entropy of a one-dimensional quantum gas of hard-core particles, initially confined in a box potential at zero temperature. At $t=0$ the right edge of the box is suddenly released and the system is let free to expand. During this expansion, the initially …