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quant-ph2026
Exact Temporal Criticalities of Entanglement and Negativity in Gaussian and Non-Gaussian Dissipative Kitaev Chains
Shrey Chowdhary, Sanket Chirame, Stephan Haas +1
When the two largest eigenvalues of an entanglement or negativity spectrum meet, the gap of the corresponding entanglement or negativity Hamiltonian closes while entropies stay smo…
cond-mat.str-el2026
Many-Body Protection of Topological Edge Memory in Strong Interacting Quenches
Yuxiao Hang, Stephan Haas, Rishabh Jha
Quantum quenches drive edge states far from equilibrium, yet whether the memory of a topological initial state survives in a non-integrable, interacting system has remained largely…
quant-ph2026
Geometric Decoherence Time in Lindbladian Dynamics
Rishabh Jha, Stephan Haas, Abhinav Prem
The onset of decoherence in open many-body systems lacks a dynamical timescale grounded in the loss of bipartite entanglement. Here, we introduce the $tim…