Dynamics of Negativity of a Wannier‐Stark Many‐Body Localized System Coupled to a Bath

An interacting system subjected to a strong linear potential can host many-body localized (MBL) phase when being slightly perturbed. This so-called Wannier–Stark or “tilted-field” MBL inherits many properties from the well-investigated disordered phase, and provides an alternative route experimentally engineer systems without quenched disorder. Herein, dynamics of entanglement in coupled dephasing environment is investigated. As accessible proxy, third Rényi negativity R 3 used, which reduces entropy case isolated environment. measure captures characteristic logarithmic growth phases intermediate-time regime, where effects coupling are not yet dominating dynamics. Thus, it forms tool distinguish noninteracting localization up intermediate time-scales, quantify quantum correlations mixed-state