Quantum obesity and steering ellipsoids for fermionic fields in Garfinkle-Horowitz-Strominger dilation spacetime

• URL: http://arxiv.org/abs/2408.06869v2
• Date: Wed, 14 Aug 2024 01:50:17 GMT
• Title: Quantum obesity and steering ellipsoids for fermionic fields in Garfinkle-Horowitz-Strominger dilation spacetime
• Authors: Samira Elghaayda, M. Y. Abd-Rabbou, Mostafa Mansour,
• Abstract summary: This paper investigates quantum obesity (QO), quantum discord (QD), and the quantum steering ellipsoid (QSE) for bipartite Gisin states subjected to Garfinkle-Horowitz-Strominger dilation of spacetime on the second qubit.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This paper investigates quantum obesity (QO), quantum discord (QD), and the quantum steering ellipsoid (QSE) for bipartite Gisin states subjected to Garfinkle-Horowitz-Strominger (GHS) dilation of spacetime on the second qubit. These three quantifiers are introduced to characterize quantum correlations beyond entanglement and can also function as entanglement witnesses. Our results demonstrate a monotonic decrease in the physical accessibility of both QD and QO as the dilation parameter increases within the region-I of the second qubit. Conversely, in the anti-particle region, the accessibility of QD and QO stabilizes at finite values of the dilation parameter owing to the influence of the Pauli exclusion principle and Fermi-Dirac statistics, subsequently increasing gradually. Notably, the QSE in the region-I expands as the Dirac field frequency rises and the dilation parameter diminishes, while the opposite trend is observed in the anti-particle region.

Related papers

• Phase transitions, symmetries, and tunneling in Kerr parametric oscillators [37.69303106863453]
  We study the onset of ground-state and excited-state quantum phase transitions in KPOs. We identify the critical points associated with quantum phase transitions and analyze their influence on the energy spectrum and tunneling dynamics. Our findings provide insights into the engineering of robust quantum states, quantum dynamics control, and onset of quantum phase transitions with implications for critical quantum sensing.
  arXiv  Detail & Related papers  (2025-04-21T18:00:19Z)
• Theory of the correlated quantum Zeno effect in a monitored qubit dimer [41.94295877935867]
  We show how the competition between two measurement processes give rise to two distinct Quantum Zeno (QZ) regimes. We develop a theory based on a Gutzwiller ansatz for the wavefunction that is able to capture the structure of the Hilbert phase diagram. We show how the two QZ regimes are intimately connected to the topology of the flow of the underlying non-Hermitian Hamiltonian governing the no-click evolution.
  arXiv  Detail & Related papers  (2025-03-28T19:44:48Z)
• Quasi-$Φ_0$-periodic supercurrent at quantum Hall transitions [31.269816893043046]
  Recent quantum interference studies suggest that QH edge states can effectively mediate a supercurrent across high-quality graphene weak links. We employ a back-gated graphene Josephson junction, comprising high-mobility CVD-grown graphene encapsulated in hexagonal Boron Nitride (hBN) and contacted by Nb leads. Superconducting pockets are detected persisting beyond the QH onset, up to 2.4 T, hence approaching the upper critical field of the Nb contacts.
  arXiv  Detail & Related papers  (2025-03-19T16:22:56Z)
• Transient concurrence for copropagating entangled bosons and fermions [0.0]
  We investigate how entanglement affects the evolution of the particles using a modified version of the shutter quantum model. We derive a transient concurrence to momentum-space entanglement, and show that modulates the interference correlation of the joint probability density. We derive analytical expressions that reveal a direct connection between entanglement and the characteristic oscillations of the Hanbury-Brown and Twiss effect.
  arXiv  Detail & Related papers  (2024-10-15T22:42:29Z)
• Attractive-repulsive interaction in coupled quantum oscillators [14.37149160708975]
  We find an interesting symmetry-breaking transition from quantum limit cycle oscillation to quantum inhomogeneous steady state. This transition is contrary to the previously known symmetry-breaking transition from quantum homogeneous to inhomogeneous steady state. Remarkably, we find the generation of entanglement associated with the symmetry-breaking transition that has no analogue in the classical domain.
  arXiv  Detail & Related papers  (2024-08-23T10:45:19Z)
• Physically Accessible and Inaccessible Quantum Correlations of Dirac Fields in Schwarzschild Spacetime [0.6749750044497732]
  textitAlice and textitBob share a textitGisin state near the Schwarzschild black hole. Hawking decoherence reduces the quantum correlations of Dirac fields in the physically accessible region. As Hawking decoherence intensifies in the physically inaccessible and spacetime regions, the quantum correlations of Dirac fields reemerge.
  arXiv  Detail & Related papers  (2024-07-07T22:55:13Z)
• Realizing Topological Quantum Walks on NISQ Digital Quantum Computer [0.0]
  We study the quantum walk on the off-diagonal Aubry-Andr'e-Harper lattice with periodic modulation using a digital quantum computer. Initiating the quantum walk with a particle at the lattice edge reveals the robustness of the edge state, attributed to the topological nature of the AAH model. We extend our investigation to the quantum walk of two particles with nearest-neighbour (NN) interaction.
  arXiv  Detail & Related papers  (2024-02-28T20:05:14Z)
• Hilbert Space Fragmentation in Open Quantum Systems [0.7412445894287709]
  We investigate the phenomenon of Hilbert space fragmentation (HSF) in open quantum systems. We find that it can stabilize highly entangled steady states.
  arXiv  Detail & Related papers  (2023-05-05T18:00:06Z)
• Observing super-quantum correlations across the exceptional point in a single, two-level trapped ion [48.7576911714538]
  In two-level quantum systems - qubits - unitary dynamics theoretically limit these quantum correlations to $2qrt2$ or 1.5 respectively. Here, using a dissipative, trapped $40$Ca$+$ ion governed by a two-level, non-Hermitian Hamiltonian, we observe correlation values up to 1.703(4) for the Leggett-Garg parameter $K_3$. These excesses occur across the exceptional point of the parity-time symmetric Hamiltonian responsible for the qubit's non-unitary, coherent dynamics.
  arXiv  Detail & Related papers  (2023-04-24T19:44:41Z)
• Multipartite Entanglement in the Measurement-Induced Phase Transition of the Quantum Ising Chain [77.34726150561087]
  External monitoring of quantum many-body systems can give rise to a measurement-induced phase transition. We show that this transition extends beyond bipartite correlations to multipartite entanglement.
  arXiv  Detail & Related papers  (2023-02-13T15:54:11Z)
• Measurement phase transitions in the no-click limit as quantum phase transitions of a non-hermitean vacuum [77.34726150561087]
  We study phase transitions occurring in the stationary state of the dynamics of integrable many-body non-Hermitian Hamiltonians. We observe that the entanglement phase transitions occurring in the stationary state have the same nature as that occurring in the vacuum of the non-hermitian Hamiltonian.
  arXiv  Detail & Related papers  (2023-01-18T09:26:02Z)
• System-environment dynamics of GHZ-like states in noninertial frames [14.401323451758975]
  Quantum coherence, quantum entanglement and quantum nonlocality are important resources in quantum information precessing. We study the dynamical evolution of the three-qubit GHZ-like states in non-inertial frame when one and/or two qubits undergo decoherence.
  arXiv  Detail & Related papers  (2022-12-30T03:36:48Z)
• Coherence revival under the Unruh effect and its metrological advantage [2.3772112135888945]
  We find that quantum coherence as a nonclassical correlation can be generated through the Markovian evolution of the detector system. We verify such coherence revival by inspecting its metrological advantage on the quantum Fisher information (QFI) enhancement.
  arXiv  Detail & Related papers  (2021-11-02T03:57:32Z)
• Measurement of Bell-type inequalities and quantum entanglement from $\Lambda$-hyperon spin correlations at high energy colliders [0.0]
  Spin correlations of $Lambda$-hyperons embedded in the QCD strings formed in high energy collider experiments provide unique insight into their locality and entanglement features. We show that while the Clauser-Horne-Shimony-Holt inequality is less stringent for such states, they provide a benchmark for quantum-to-classical transitions induced by varying i) the associated hadron, ii) the spin of nucleons,iii) the separation in rapidity between pairs, and iv) the kinematic accessed.
  arXiv  Detail & Related papers  (2021-07-27T18:00:02Z)
• Unraveling the topology of dissipative quantum systems [58.720142291102135]
  We discuss topology in dissipative quantum systems from the perspective of quantum trajectories. We show for a broad family of translation-invariant collapse models that the set of dark state-inducing Hamiltonians imposes a nontrivial topological structure on the space of Hamiltonians.
  arXiv  Detail & Related papers  (2020-07-12T11:26:02Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.