Time evolution of entanglement negativity across a defect
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Physics A: Mathematical and Theoretical"
DOI: 10.1088/1751-8121/ab831c
Abstract: We consider a quench in a free-fermion chain by joining two homogeneous half-chains via a defect. The time evolution of the entanglement negativity is studied between adjacent segments surrounding the defect. In case of equal… read more here.
Keywords: time; evolution entanglement; entanglement negativity; negativity ... See more keywords
Perturbative expansion of entanglement negativity using patterned matrix calculus
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.012322
Abstract: Negativity is an entanglement monotone frequently used to quantify entanglement in bipartite states. Because negativity is a non-analytic function of a density matrix, existing methods used in the physics literature are insufficient to compute its… read more here.
Keywords: entanglement negativity; entanglement; perturbative expansion; negativity ... See more keywords
Decoherence, entanglement negativity, and circuit complexity for an open quantum system
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.106007
Abstract: In this paper, we compare the saturation time scales for complexity, linear entropy and entanglement negativity for two open quantum systems. Our first model is a coupled harmonic oscillator, where we treat one of the… read more here.
Keywords: open quantum; entanglement negativity; saturation time; complexity ... See more keywords
Entanglement Negativity and Mutual Information after a Quantum Quench: Exact Link from Space-Time Duality.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.140503
Abstract: We study the growth of entanglement between two adjacent regions in a tripartite, one-dimensional many-body system after a quantum quench. Combining a replica trick with a space-time duality transformation, we derive an exact, universal relation… read more here.
Keywords: information; time; entanglement negativity; quantum quench ... See more keywords