On the spatial dependence of Casimir friction in graphene
- URL: http://arxiv.org/abs/2308.14868v1
- Date: Mon, 28 Aug 2023 19:44:00 GMT
- Title: On the spatial dependence of Casimir friction in graphene
- Authors: Aitor Fern\'andez and C\'esar D. Fosco
- Abstract summary: We study the spatial properties of the Casimir friction phenomenon for an atom moving at a non-relativistic constant velocity parallel to a planar graphene sheet.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We study the spatial properties of the Casimir friction phenomenon for an
atom moving at a non-relativistic constant velocity parallel to a planar
graphene sheet. The coupling of the atom to the vacuum electromagnetic (EM)
field is implemented by an electric dipole term, plus a R\"ontgen term. We
study the fermion pair production, evaluating the angular dependence of the
fermion emission probability. The phenomenon exhibits a threshold: it only
exists when the speed of the sliding motion is larger than the Fermi velocity
of the medium.
Related papers
- 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) - 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) - Temporal factorization of a non-stationary electromagnetic cavity field [0.0]
We show that it is possible to factorize the entire temporal dependency and write its formal solution.
We prove in detail that the photon production is proportional to the Planck factor involving a velocity-dependent effective temperature.
arXiv Detail & Related papers (2022-12-29T12:36:27Z) - Fermion production at the boundary of an expanding universe: a cold-atom
gravitational analogue [68.8204255655161]
We study the phenomenon of cosmological particle production of Dirac fermions in a Friedman-Robertson-Walker spacetime.
We present a scheme for the quantum simulation of this gravitational analogue by means of ultra-cold atoms in Raman optical lattices.
arXiv Detail & Related papers (2022-12-02T18:28:23Z) - Motion induced excitation and electromagnetic radiation from an atom
facing a thin mirror [62.997667081978825]
We evaluate the probability of (de-)excitation and photon emission from a neutral, moving, non-relativistic atom, coupled to a quantum electromagnetic field and in the presence of a thin, perfectly conducting plane ("mirror")
Results extend to a more realistic model, where the would-be electron was described by a scalar variable, coupled to an (also scalar) vacuum field.
arXiv Detail & Related papers (2022-07-06T20:54:59Z) - 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) - 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) - Retarded resonance Casimir-Polder interaction of a uniformly rotating
two-atom system [0.0]
We calculate the second-order energy shift of the entangled states in the presence of two kinds of fields.
A unique retarded response is also noticed in comparison to the free massless case.
arXiv Detail & Related papers (2020-08-30T14:31:59Z) - Quantum coherent spin-electric control in a molecular nanomagnet at
clock transitions [57.50861918173065]
Electrical control of spins at the nanoscale offers architectural advantages in spintronics.
Recent demonstrations of electric-field (E-field) sensitivities in molecular spin materials are tantalising.
E-field sensitivities reported so far are rather weak, prompting the question of how to design molecules with stronger spin-electric couplings.
arXiv Detail & Related papers (2020-05-03T09:27:31Z)
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.