On tests of the quantum nature of gravitational interactions in presence of non-linear corrections to quantum mechanics

• URL: http://arxiv.org/abs/2302.00365v2
• Date: Mon, 23 Oct 2023 16:12:35 GMT
• Title: On tests of the quantum nature of gravitational interactions in presence of non-linear corrections to quantum mechanics
• Authors: Giovanni Spaventa, Ludovico Lami, Martin B. Plenio
• Abstract summary: We show that entanglement dynamics can occur in the presence of a weak quantum interaction and non-linear corrections to local quantum mechanics. This highlights the importance of going beyond entanglement detection to conclusively test the quantum character of gravity.
• Score: 6.138671548064356
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: When two particles interact primarily through gravity and follow the laws of quantum mechanics, the generation of entanglement is considered a hallmark of the quantum nature of the gravitational interaction. However, we demonstrate that entanglement dynamics can also occur in the presence of a weak quantum interaction and non-linear corrections to local quantum mechanics, even if the gravitational interaction is classical or absent at short distances. This highlights the importance of going beyond entanglement detection to conclusively test the quantum character of gravity, and it requires a thorough examination of the strength of other quantum forces and potential non-linear corrections to quantum mechanics in the realm of large masses.

Related papers

• Quantum coarsening and collective dynamics on a programmable quantum simulator [27.84599956781646]
  We experimentally study collective dynamics across a (2+1)D Ising quantum phase transition. By deterministically preparing and following the evolution of ordered domains, we show that the coarsening is driven by the curvature of domain boundaries.
  arXiv  Detail & Related papers  (2024-07-03T16:29:12Z)
• Table-top nanodiamond interferometer enabling quantum gravity tests [34.82692226532414]
  We present a feasibility study for a table-top nanodiamond-based interferometer. By relying on quantum superpositions of steady massive objects our interferometer may allow exploiting just small-range electromagnetic fields.
  arXiv  Detail & Related papers  (2024-05-31T17:20:59Z)
• Relativistic Dips in Entangling Power of Gravity [0.0]
  We show that quantum correlations can remain strongly suppressed for certain choices of parameters. We find a pronounced cancellation point far from the Planck scale, where the system tends towards classicalization.
  arXiv  Detail & Related papers  (2024-05-07T20:44:30Z)
• Interaction-induced topological pumping in a solid-state quantum system [18.7657779101508]
  Inter-particle interaction can profoundly alter the band structure of quantum many-body systems. Here we demonstrate interaction-induced topological pumping in a solid-state quantum system comprising an array of 36 superconducting qubits.
  arXiv  Detail & Related papers  (2023-03-08T13:57:13Z)
• Quantum Instability [30.674987397533997]
  We show how a time-independent, finite-dimensional quantum system can give rise to a linear instability corresponding to that in the classical system. An unstable quantum system has a richer spectrum and a much longer recurrence time than a stable quantum system.
  arXiv  Detail & Related papers  (2022-08-05T19:53:46Z)
• Is gravitational entanglement evidence for the quantization of spacetime? [0.0]
  Experiments witnessing the entanglement between two particles interacting only via the gravitational field have been proposed as a test whether gravity must be quantized. We present a parametrized model for the gravitational interaction of quantum matter on a classical spacetime, inspired by the de Broglie-Bohm formulation of quantum mechanics.
  arXiv  Detail & Related papers  (2022-05-02T14:37:24Z)
• Gravitational entanglement and the mass contribution of internal energy in nonrelativistic quantum systems [0.0]
  Post-Newtonian gravitational effects in composite nonrelativistic quantum systems have been discussed, where the internal energy contributes to the mass, promoting the mass to a Hilbert space operator. It can be shown that both concepts, when combined, result in inconsistencies, reinforcing the arguments for the necessity of a rigorous derivation of the nonrelativistic limit of gravitating quantum matter from first principles.
  arXiv  Detail & Related papers  (2022-04-07T09:39:07Z)
• Quantum signatures in nonlinear gravitational waves [0.0]
  We investigate quantum signatures in gravitational waves using tools from quantum optics. We show that Squeezed-coherent gravitational waves can enhance or suppress the signal measured by an interferometer. We also show that Gaussian gravitational wave quantum states can be reconstructed from measurements over an ensemble of optical fields interacting with a single copy of the gravitational wave.
  arXiv  Detail & Related papers  (2021-11-02T17:55:53Z)
• A Causal Framework for Non-Linear Quantum Mechanics [0.0]
  We show that the resulting low-energy theory, non-linear quantum mechanics, is causal, preserves probability and permits a consistent description of the process of measurement. We show that non-linear quantum effects can be observed in macroscopic systems even in the presence of de-coherence. Non-linear quantum mechanics also enables novel gravitational phenomena and may open new directions to solve the black hole information problem.
  arXiv  Detail & Related papers  (2021-06-19T21:52:27Z)
• 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)
• Entropic Uncertainty Relations and the Quantum-to-Classical transition [77.34726150561087]
  We aim to shed some light on the quantum-to-classical transition as seen through the analysis of uncertainty relations. We employ entropic uncertainty relations to show that it is only by the inclusion of imprecision in our model of macroscopic measurements that we can prepare a system with two simultaneously well-defined quantities.
  arXiv  Detail & Related papers  (2020-03-04T14:01:17Z)

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.