Does the survival and sudden death of quadripartite steering in curved spacetime truly depend on multi-directionality?

2025/11/03 by Xiaobao Liu, Liu, Xiaobao, Wentao Liu +5 · 3 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Quantum Electrodynamics and Casimir Effect #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.2511.01561

openalex publication_date 2025/11/03 · openalex created_date 2025/11/06 · openalex updated_date 2026/07/28

Abstract

We systematically investigate the directional dependence of Gaussian quadripartite quantum steering and its redistribution among different modes in the background of a Schwarzschild black hole. For physically accessible sectors, we identify three distinct behaviors: (i) steering from non-gravitational to gravitational observers undergoes sudden death at maximal asymmetry with the Hawking temperature, marking the crossover from two-way to one-way steerability; (ii) steering in the opposite direction decays monotonically and vanishes only in the extreme black hole limit, highlighting its directional sensitivity to spacetime curvature; (iii) steering from hybrid gravitational-non-gravitational partitions to non-gravitational mode persists at a finite asymptotic value set by the initial squeezing parameter. Moreover, all inaccessible steerings generated by the Hawking effect exhibit an intrinsic asymmetry, with their specific behavior being strongly dependent on the steering direction.

Citations

• Wormhole-Induced correlation: A Link Between Two Universes
• Scrambling-Enhanced Quantum Battery Charging in Black Hole Analogues
• Dissipation suppression for an Unruh-DeWitt battery with a reflecting boundary
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• Lorentz violation alleviates gravitationally induced entanglement degradation
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• Reflected entropy and Markov gap in non-inertial frames
• Does Hawking effect always degrade fidelity of quantum teleportation in Schwarzschild spacetime?
• Quantum simulation of Hawking radiation and curved spacetime with a superconducting on-chip black hole
• Quantum entanglement
• Black-hole evaporation in the Klein-Sauter-Heisenberg-Euler formalism
• Particle creation by black holes

Cited by

• Entanglement, equivalence principle, and HBAR entropy, in a new bumblebee black hole
• Transition rates and their applications in accelerated single-qubit for fermionic spinor field coupling
• Entanglement degradation of static black holes in effective quantum gravity

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