Fermionic steering in multi-event horizon spacetime

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-01-22 DOI:10.1140/epjc/s10052-025-13774-1

Shu-Min Wu, Jin-Xuan Li, Yu-Xuan Wang, Si-Han Shang, Jianbo Lu

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Abstract

We investigate quantum steering of Dirac field for different types of Bell states in Schwarzschild–de Sitter (SdS) spacetime that has a black hole event horizon (BEH) and a cosmological event horizon (CEH). We find that fermionic steerability from Bob to Alice is greater than fermionic steerability from Alice to Bob, while bosonic steerability exhibits the opposite behavior in SdS spacetime. These different properties between fermionic and bosonic steering arise from the differences between Fermi–Dirac statistics and Bose–Einstein statistics. We also find that the Hawking effect of the black hole decreases fermionic steerability. However, the Hawking effect of the expanding universe can enhance fermionic steerability, which differs from the properties of quantum steering in single-event horizon spacetime. Interestingly, we can indirectly protect quantum steering by using appropriate types of Bell states in multi-event horizon spacetime. These conclusions are helpful to guide the task of processing relativistic quantum information for quantum steering in SdS spacetime.

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多事件视界时空中的费米子操纵

研究了具有黑洞视界（BEH）和宇宙学视界（CEH）的Schwarzschild-de Sitter （SdS）时空中不同类型贝尔态的Dirac场的量子导向。我们发现从Bob到Alice的费米子可操纵性大于从Alice到Bob的费米子可操纵性，而玻色子可操纵性在SdS时空中表现出相反的行为。费米子和玻色子转向之间的这些不同性质源于费米-狄拉克统计和玻色-爱因斯坦统计之间的差异。我们还发现黑洞的霍金效应降低了费米子的可操纵性。然而，宇宙膨胀的霍金效应可以增强费米子的方向性，这与单事件视界时空中的量子方向性不同。有趣的是，我们可以通过在多事件视界时空中使用适当类型的贝尔态来间接保护量子导向。这些结论有助于指导在SdS时空中处理相对论性量子信息以实现量子导向的任务。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.