On the heat transfer across a vacuum gap mediated by Casimir force

• URL: http://arxiv.org/abs/2003.00760v1
• Date: Mon, 2 Mar 2020 11:02:36 GMT
• Title: On the heat transfer across a vacuum gap mediated by Casimir force
• Abstract summary: We demonstrate that the Casimir force driven heat flux is at least 15 orders of magnitude smaller than the near-field heat flux between two solids at any given separating distance. We provide compelling arguments that the measures reported are no more and no less a measure of the virtual temperatures of vibrating modes which does not allow an access to the Casimir force driven heat flux.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Following a recent report on experiments it has been claimed that a phonon heat transfer through a vacuum gap between two solids due to quantum fluctuations had been measured. Here we make a theoretical analyzis of this mechanism and demonstrate that the Casimir force driven heat flux is at least 15 orders of magnitude smaller than the near-field heat flux between two solids at any given separating distance. Moreover, we provide compelling arguments that the measures reported are no more and no less a measure of the virtual temperatures of vibrating modes which does not allow an access to the Casimir force driven heat flux.

Related papers

• Vacuum and thermal fluctuations of a scalar field with point interactions [0.0]
  We investigate the vacuum and thermal fluctuations of a neutral massless scalar field living in Minkowski spacetime.<n>We derive a convergent Born series expansion for the Casimir energy, which identifies multiple-scattering processes as the mechanism underlying vacuum forces.
  arXiv  Detail & Related papers  (2026-05-11T15:32:28Z)
• Microscopic Theory of Heat Transfer across a Vacuum [0.0]
  Heat transfer is a fundamental concept in physics, and how to characterize the microscopical physical mechanism of heat transfer is a significant topic.<n>Recently, a new mechanism for heat transfer, phonon heat transfer across a vacuum through quantum fluctuations, has been experimentally demonstrated.<n>Here, we establish the nonrelativistic microscopic theory of phonon heat transfer across a vacuum confined by two movable end mirrors.
  arXiv  Detail & Related papers  (2025-08-04T12:37:47Z)
• Thermal Effects in the Casimir Torque between Birefringent Plates [0.0]
  We investigate the influence of thermal fluctuations on the Casimir torque between birefringent plates.<n> thermal modes significantly diminish the torque, with reductions up to 2 orders of magnitude for highly birefringent materials.<n>We demonstrate that systems of dissimilar birefringent plates that exhibit a distance-dependent reversal in the torque's direction can enable precise control of the torque's magnitude.
  arXiv  Detail & Related papers  (2025-07-02T22:34:23Z)
• Observation of non-contact Casimir friction [0.0]
  Quantum mechanics predicts the occurrence of random electromagnetic field fluctuations, or virtual photons, in vacuum. The exchange of virtual photons between two bodies in relative motion could lead to non-contact quantum vacuum friction or Casimir friction. We report the first measurement of the non-contact Casimir frictional force between two moving bodies.
  arXiv  Detail & Related papers  (2024-03-10T00:39:52Z)
• Rectified Lorentz Force from Thermal Current Fluctuations [0.0]
  We compute the averaged Lorentz force density that turns out nonzero in a thin sub-surface layer, pointing towards the surface, while vanishing in the bulk. This is an elementary example of rectified fluctuations, similar to the Casimir force or radiative heat transport.
  arXiv  Detail & Related papers  (2023-12-01T15:48:00Z)
• Thermodynamics of adiabatic quantum pumping in quantum dots [50.24983453990065]
  We consider adiabatic quantum pumping through a resonant level model, a single-level quantum dot connected to two fermionic leads. We develop a self-contained thermodynamic description of this model accounting for the variation of the energy level of the dot and the tunnelling rates with the thermal baths.
  arXiv  Detail & Related papers  (2023-06-14T16:29:18Z)
• Universal Casimir interactions in the sphere-sphere geometry [0.0]
  We study universal Casimir interactions in two configurations which appear as dual to each other. The long-distance limit, equivalently the high-temperature limit, is dominated by the effect of low-frequency transverse magnetic thermal fluctuations.
  arXiv  Detail & Related papers  (2022-05-22T13:04:24Z)
• Photoinduced prethermal order parameter dynamics in the two-dimensional large-$N$ Hubbard-Heisenberg model [77.34726150561087]
  We study the microscopic dynamics of competing ordered phases in a two-dimensional correlated electron model. We simulate the light-induced transition between two competing phases.
  arXiv  Detail & Related papers  (2022-05-13T13:13:31Z)
• Mutual friction and diffusion of two-dimensional quantum vortices [0.0]
  We present an open quantum systems theory of thermally-damped vortex motion in atomic superfluids. This mechanism couples strongly to vortex core motion and causes dissipation of vortex energy due to mutual friction. We derive an analytic expression for the dimensionless mutual friction coefficient that gives excellent quantitative agreement with experimentally measured values.
  arXiv  Detail & Related papers  (2022-05-09T06:39:26Z)
• Experimental verification of fluctuation relations with a quantum computer [68.8204255655161]
  We use a quantum processor to experimentally validate a number of theoretical results in non-equilibrium quantum thermodynamics. Our experiments constitute the experimental basis for the understanding of the non-equilibrium energetics of quantum computation.
  arXiv  Detail & Related papers  (2021-06-08T14:16:12Z)
• Evolution of a Non-Hermitian Quantum Single-Molecule Junction at Constant Temperature [62.997667081978825]
  We present a theory for describing non-Hermitian quantum systems embedded in constant-temperature environments. We find that the combined action of probability losses and thermal fluctuations assists quantum transport through the molecular junction.
  arXiv  Detail & Related papers  (2021-01-21T14:33:34Z)
• Enhanced decoherence for a neutral particle sliding on a metallic surface in vacuum [68.8204255655161]
  We show that non-contact friction enhances the decoherence of the moving atom. We suggest that measuring decoherence times through velocity dependence of coherences could indirectly demonstrate the existence of quantum friction.
  arXiv  Detail & Related papers  (2020-11-06T17:34:35Z)
• Repulsive Casimir-Lifshitz pressure in closed cavities [0.0]
  We consider the interaction pressure acting on the surface of a sphere enclosed within a magnetodielectric cavity. We extend the Dzyaloshinskii-Lifshitz-Pitaevskii result for homogeneous slabs. We present configurations in which both the interaction and the self-energy contribution to the pressure tend to expand the sphere.
  arXiv  Detail & Related papers  (2020-08-05T10:14:57Z)
• Theory of waveguide-QED with moving emitters [68.8204255655161]
  We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace. We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
  arXiv  Detail & Related papers  (2020-03-20T12:14:10Z)

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.