Significant circular Unruh effect at small acceleration

• URL: http://arxiv.org/abs/2412.19454v1
• Date: Fri, 27 Dec 2024 04:45:56 GMT
• Title: Significant circular Unruh effect at small acceleration
• Authors: Yuebing Zhou, Jiawei Hu, Hongwei Yu,
• Abstract summary: We find that the circular version of the Unruh effect can be significant even at very small centripetal accelerations. This finding sheds new light on the experimental detection of the circular Unruh effect.
• Score: 0.24578723416255752
• License:
• Abstract: We study the transition rates of an atom rotating in a circular orbit, which is coupled with fluctuating electromagnetic fields in vacuum. We find that when the rotational angular velocity exceeds the transition frequency of the atom, the excitation rate can reach the same order of magnitude as the emission rate, even with an extremely low centripetal acceleration resulting from a very small orbital radius. For experimentally accessible centripetal accelerations, the excitation rate of centripetally accelerated atoms can be up to ten to the power of two hundred thousand times that of linearly accelerated atoms with the same acceleration. Our result suggests that the circular version of the Unruh effect can be significant even at very small centripetal accelerations, contrary to the common belief that a large Unruh effect requires large acceleration. This finding sheds new light on the experimental detection of the circular Unruh effect.

Related papers

• Extensive manipulation of transition rates and substantial population inversion of rotating atoms inside a cavity [3.4300172110027036]
  We investigate the transition rates of a centripetally accelerated atom interacting with electromagnetic vacuum fluctuations inside a high-quality cavity. Our findings reveal that the emission and excitation rates can be extensively manipulated by adjusting the cavity's normal mode frequency and the rotational angular velocity.
  arXiv  Detail & Related papers  (2024-12-29T09:23:52Z)
• Strong Noninertial Radiative Shifts in Atomic Spectra at Low Accelerations [0.0]
  We show that a purely-noninertial radiative shift as large as 50 times the inertial energy shift can be obtained at small, experimentally achievable accelerations. We argue that the radiative energy-level shift is a promising observable for detecting Unruh thermality with current technology.
  arXiv  Detail & Related papers  (2024-06-19T12:01:19Z)
• Detecting circular Unruh effect with quantum entanglement [0.12891210250935145]
  We show that the state of a quantum system composed of two atoms in circular motion in vacuum can be entangled when the angular velocity and the radius of the orbit are appropriate. The entanglement as a result of centripetal acceleration is initial-state independent and can be viewed as a manifestation of the circular version of the Unruh effect.
  arXiv  Detail & Related papers  (2023-03-10T00:53:13Z)
• Acceleration effect and the possibility of its observation in neutron-optical experiment [0.0]
  The acceleration effect hypothesis in quantum mechanics has recently been confirmed by numerically solving a number of problems. Since the time of neutron interaction with the nucleus is very short, the observation of the acceleration effect during scattering by nuclei requires them to move with a very high acceleration.
  arXiv  Detail & Related papers  (2022-10-18T11:51:10Z)
• Resolving the gravitational redshift within a millimeter atomic sample [94.94540201762686]
  Einstein's theory of general relativity states that clocks at different gravitational potentials tick at different rates. We measure a linear frequency gradient consistent with the gravitational redshift within a single millimeter scale sample of ultracold strontium.
  arXiv  Detail & Related papers  (2021-09-24T23:58:35Z)
• Quantum control of nuclear spin qubits in a rapidly rotating diamond [62.997667081978825]
  Nuclear spins in certain solids couple weakly to their environment, making them attractive candidates for quantum information processing and inertial sensing. We demonstrate optical nuclear spin polarization and rapid quantum control of nuclear spins in a diamond physically rotating at $1,$kHz, faster than the nuclear spin coherence time. Our work liberates a previously inaccessible degree of freedom of the NV nuclear spin, unlocking new approaches to quantum control and rotation sensing.
  arXiv  Detail & Related papers  (2021-07-27T03:39:36Z)
• 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)
• Zitterbewegung of massless particles [91.3755431537592]
  Zitterbewegung of massless particles with an arbitrary spin is analyzed in various representations. Zitterbewegung takes place in any representation except for the Foldy-Wouthuysen one.
  arXiv  Detail & Related papers  (2020-08-12T14:16:44Z)
• Gravity Probe Spin: Prospects for measuring general-relativistic precession of intrinsic spin using a ferromagnetic gyroscope [51.51258642763384]
  An experimental test at the intersection of quantum physics and general relativity is proposed. The behavior of intrinsic spin in spacetime is an experimentally open question. A measurement is possible by using mm-scale ferromagnetic gyroscopes in orbit around the Earth.
  arXiv  Detail & Related papers  (2020-06-16T17:18:44Z)
• Shaking photons from the vacuum: acceleration radiation from vibrating atoms [0.0]
  We show that merely by shaking the atom, in simple harmonic motion, can have the same effect. We propose a circuit-QED potential implementation that yields transition rates of $sim 10-4,rm Hz$, which may be detectable experimentally.
  arXiv  Detail & Related papers  (2020-03-04T18:56:46Z)

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.