Robustness of analogue Hawking radiation in cavities with moving boundaries

• URL: http://arxiv.org/abs/2507.13894v1
• Date: Fri, 18 Jul 2025 13:20:30 GMT
• Title: Robustness of analogue Hawking radiation in cavities with moving boundaries
• Authors: Alberto García Martín-Caro, Javier Olmedo, Jose M. Sánchez Velázquez,
• Abstract summary: We characterize particle production spectra in cavities with moving boundaries under various configurations, including expanding, collapsing, and rigidly accelerating scenarios.<n>We find that thermal signatures emerge in specific expanding cavity configurations but are highly dependent on frequency bands and acceleration parameters.<n>Our results identify which experimental setups can reliably simulate gravitationally-induced phenomena and quantify how finite-size effects and transient dynamics modify the expected thermal distributions.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this work we explore the limitations and robustness of thermal radiation in dynamical Casimir systems serving as analogs for Hawking radiation. Through detailed numerical analysis, we characterize particle production spectra in cavities with moving boundaries under various configurations, including expanding, collapsing, and rigidly accelerating scenarios. We find that thermal signatures emerge in specific expanding cavity configurations but are highly dependent on frequency bands and acceleration parameters. In those configurations of the cavity where there is thermal production, we derive fitting expressions that quantify deviations from idealized thermal spectra through gray-body factors, revealing oscillatory behaviors tied to acceleration duration. Our results identify which experimental setups can reliably simulate gravitationally-induced phenomena and quantify how finite-size effects and transient dynamics modify the expected thermal distributions, providing a comprehensive framework for distinguishing genuine Hawking-like radiation from experimental artifacts.

Related papers

• Operator Ordering in the Relativistic Quantization and its Thermodynamic Implications [0.0]
  We introduce a covariant canonical quantization for a particle in curved spacetime that tracks operator-ordering ambiguities.<n>We derive a Hermitian Hamiltonian with leading quantum-relativistic corrections.<n> Numerical studies for electrons in extreme electric fields and ultra-light particles in strong gravitational fields demonstrate that these corrections become significant at intermediate temperatures.
  arXiv  Detail & Related papers  (2025-06-20T10:47:40Z)
• Meson thermalization with a hot medium in the open Schwinger model [0.0]
  We study the thermalization dynamics of mesonic particles in a hot medium, such as the Schwinger boson or the electric flux string.<n>Our results reveal that the thermalization time increases with stronger dissipation from the environment.
  arXiv  Detail & Related papers  (2025-01-23T13:57:20Z)
• Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
  We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution. We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions. We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
  arXiv  Detail & Related papers  (2024-05-27T17:40:39Z)
• Time varying gratings model Hawking radiation [0.0]
  We show that wave energy can be trapped and amplified, leading to radiation from the quantum vacuum state. We calculate the spectrum of this emitted radiation, finding a quasi-thermal spectrum with features that depend on the grating profile.
  arXiv  Detail & Related papers  (2023-02-08T14:02:56Z)
• Incandescent temporal metamaterials [0.0]
  Time-varying media can be seized to control and manipulate wave phenomena. Time-modulation releases strong field fluctuations confined within epsilon-near-zero bodies. It enables a narrowband (partially coherent) emission spanning the whole range of wavevectors.
  arXiv  Detail & Related papers  (2022-10-11T16:00:00Z)
• Real-Space, Real-Time Approach to Quantum-Electrodynamical Time-Dependent Density Functional Theory [55.41644538483948]
  The equations are solved by time propagating the wave function on a tensor product of a Fock-space and real-space grid. Examples include the coupling strength and light frequency dependence of the energies, wave functions, optical absorption spectra, and Rabi splitting magnitudes in cavities.
  arXiv  Detail & Related papers  (2022-09-01T18:49:51Z)
• Thermalization of the Quantum Planar Rotor with external potential [0.0]
  We study decoherence, diffusion, friction, and how they thermalize a planar rotor in the presence of an external potential.<n>We analytically and numerically verify the existence of a steady state that, in the high-temperature regime, closely approximates a Gibbs state.
  arXiv  Detail & Related papers  (2022-07-11T12:15:50Z)
• Accessing the topological Mott insulator in cold atom quantum simulators with realistic Rydberg dressing [58.720142291102135]
  We investigate a realistic scenario for the quantum simulation of such systems using cold Rydberg-dressed atoms in optical lattices. We perform a detailed analysis of the phase diagram at half- and incommensurate fillings, in the mean-field approximation. We furthermore study the stability of the phases with respect to temperature within the mean-field approximation.
  arXiv  Detail & Related papers  (2022-03-28T14:55:28Z)
• Near-Field Radiative Heat Transfer Eigenmodes [55.41644538483948]
  Near-field electromagnetic interaction between nanoscale objects produces enhanced radiative heat transfer. We present a theoretical framework to describe the temporal dynamics of the radiative heat transfer in ensembles of nanostructures.
  arXiv  Detail & Related papers  (2021-02-10T23:14:30Z)
• Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
  We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas. Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit. The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
  arXiv  Detail & Related papers  (2020-08-05T18:00:26Z)
• Probing eigenstate thermalization in quantum simulators via fluctuation-dissipation relations [77.34726150561087]
  The eigenstate thermalization hypothesis (ETH) offers a universal mechanism for the approach to equilibrium of closed quantum many-body systems. Here, we propose a theory-independent route to probe the full ETH in quantum simulators by observing the emergence of fluctuation-dissipation relations. Our work presents a theory-independent way to characterize thermalization in quantum simulators and paves the way to quantum simulate condensed matter pump-probe experiments.
  arXiv  Detail & Related papers  (2020-07-20T18:00:02Z)

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.