Nonequilibrium Casimir pressure for two graphene-coated plates: Quantum field theoretical approach

• URL: http://arxiv.org/abs/2504.11880v1
• Date: Wed, 16 Apr 2025 09:04:09 GMT
• Title: Nonequilibrium Casimir pressure for two graphene-coated plates: Quantum field theoretical approach
• Authors: G. L. Klimchitskaya, C. C. Korikov, V. M. Mostepanenko,
• Abstract summary: We consider the nonequilibrium Casimir pressure in the system of two parallel graphene-coated plates.<n>The electromagnetic response of graphene coating characterized by the nonzero energy gap and chemical potential is described.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We consider the nonequilibrium Casimir pressure in the system of two parallel graphene-coated plates one of which is either warmer or cooler than the environment. The electromagnetic response of graphene coating characterized by the nonzero energy gap and chemical potential is described in the framework of the Dirac model by means of the polarization tensor. It is shown that the magnitude of the nonequilibrium Casimir pressure on a warmer plate than the environment is larger and on a cooler plate is smaller than the magnitude of the standard Casimir pressure in the state of thermal equilibrium. According to our results, the spatially local theory underestimates the role of the effects of nonequilibrium. This underestimation increases for asmaller chemical potential of the graphene coating and at lower temperatures of the cooled plate. Possible applications of the obtained results are discussed.

Related papers

• Polarization tensor in spacetime of three dimensions and quantum field theoretical description of the nonequilibrium Casimir force in graphene systems [0.0]
  The polarization tensor of graphene is recast in a mathematically equivalent but more compact and convenient computations form along the real frequency axis.<n>The advantages of the presented formalism are demonstrated on the example of nonequilibrium Casimir force.<n>The obtained form of the polarization tensor can be useful for investigation of many diverse physical phenomena in graphene systems.
  arXiv  Detail & Related papers  (2025-02-19T10:18:40Z)
• Nonequilibrium Casimir-Polder Force between Nanoparticles and Graphene-Coated Silica Plate: Combined Effect of the Chemical Potential and Mass Gap [0.0]
  The force between spherical nanoparticles and a graphene-coated silica plate is investigated in situations out of thermal equilibrium. The effect is revealed that the combined impact of the chemical potential $mu$ and mass gap $Delta$ of graphene coating depends on the relationship between $Delta$ and 2$mu$.
  arXiv  Detail & Related papers  (2024-03-09T18:54:50Z)
• Phonon-photon conversion as mechanism for cooling and coherence transfer [41.94295877935867]
  The energy of a movable wall of a cavity confining a quantum field can be converted into quanta of the field itself. We employ quantum thermodynamics to show that this phenomenon can be employed as a tool to cool down the wall. We show how to employ one laser drive to cool the entire system including the case when it is composed of other subsystems.
  arXiv  Detail & Related papers  (2023-12-15T14:42:16Z)
• Nonequilibrium Casimir-Polder Interaction Between Nanoparticles and Substrates Coated with Gapped Graphene [0.0]
  The force between nanoparticles and substrates coated with gapped graphene is studied in the framework of the Dirac model. It is shown that with increasing energy gap the magnitude of the nonequilibrium force becomes smaller.
  arXiv  Detail & Related papers  (2023-08-22T09:35:01Z)
• Casimir-Polder attraction and repulsion between nanoparticles and graphene in out-of-thermal-equilibrium conditions [0.0]
  The force magnitude increases with increasing temperature of a graphene sheet. The attractive Casimir-Polder force vanishes at some definite nanoparticle-graphene separation.
  arXiv  Detail & Related papers  (2022-05-26T17:38:23Z)
• Motion-induced radiation due to an atom in the presence of a graphene plane [62.997667081978825]
  We study the motion-induced radiation due to the non-relativistic motion of an atom in the presence of a static graphene plate. We show that the effect of the plate is to increase the probability of emission when the atom is near the plate and oscillates along a direction perpendicular to it.
  arXiv  Detail & Related papers  (2021-04-15T14:15:23Z)
• Taking the temperature of a pure quantum state [55.41644538483948]
  Temperature is a deceptively simple concept that still raises deep questions at the forefront of quantum physics research. We propose a scheme to measure the temperature of such pure states through quantum interference.
  arXiv  Detail & Related papers  (2021-03-30T18:18:37Z)
• Quantum thermodynamics of coronal heating [77.34726150561087]
  convection in the stellar photosphere generates plasma waves by an irreversible process akin to Zeldovich superradiance and sonic booms. Energy is mostly carried by megahertz Alfven waves that scatter elastically until they reach a height at which they can dissipate via mode conversion.
  arXiv  Detail & Related papers  (2021-03-15T22:27:31Z)
• Out-of-equilibrium quantum thermodynamics in the Bloch sphere: temperature and internal entropy production [68.8204255655161]
  An explicit expression for the temperature of an open two-level quantum system is obtained. This temperature coincides with the environment temperature if the system reaches thermal equilibrium with a heat reservoir. We show that within this theoretical framework the total entropy production can be partitioned into two contributions.
  arXiv  Detail & Related papers  (2020-04-09T23:06:43Z)
• Thermoelectricity in Quantum-Hall Corbino Structures [48.7576911714538]
  We measure the thermoelectric response of Corbino structures in the quantum Hall effect regime. We predict a figure of merit for the efficiency of thermoelectric cooling which becomes very large for partially filled Landau levels.
  arXiv  Detail & Related papers  (2020-03-03T19:19:28Z)
• Nonequilibrium effects in the Casimir force between two similar metallic plates kept at different temperatures [0.0]
  We study the Casimir pressure between two similar plates of finite thickness kept at different temperatures. In addition to the equilibrium contribution to the nonequilibrium Casimir pressure, a proper nonequilibrium contribution arises for temperature-dependent permittivities.
  arXiv  Detail & Related papers  (2020-02-19T08:17:42Z)

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.