An m-fold superposition of typical sub-maximally entangled states gains a universal ln(m) entanglement enhancement, while maximally entangled states relax to the Haar limit via N-independent scaling laws.
Peschel, Calculation of reduced density matrices from correlation functions, J
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In a driven topological free-fermion chain, the entanglement spectrum exhibits robust subharmonic period-doubling when initialized as a superposition of zero-pi edge modes, vanishing for stationary states or in the trivial phase.
Entanglement asymmetry for inhomogeneous U(1) charges in fragmented systems scales extensively, is bounded by a universal fraction of its maximum, and distinguishes classical from quantum fragmentation.
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Typical Entanglement of Superpositions
An m-fold superposition of typical sub-maximally entangled states gains a universal ln(m) entanglement enhancement, while maximally entangled states relax to the Haar limit via N-independent scaling laws.
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Locked Subharmonic Oscillations in the Entanglement Spectrum of a Periodically Driven Topological Chain
In a driven topological free-fermion chain, the entanglement spectrum exhibits robust subharmonic period-doubling when initialized as a superposition of zero-pi edge modes, vanishing for stationary states or in the trivial phase.
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Enhancing entanglement asymmetry in fragmented quantum systems
Entanglement asymmetry for inhomogeneous U(1) charges in fragmented systems scales extensively, is bounded by a universal fraction of its maximum, and distinguishes classical from quantum fragmentation.