Emission of twisted photons by a scalar charged particle in a strong magnetic field

• URL: http://arxiv.org/abs/2303.01946v2
• Date: Thu, 20 Jul 2023 19:18:10 GMT
• Title: Emission of twisted photons by a scalar charged particle in a strong magnetic field
• Authors: D. Karlovets, A. Di Piazza
• Abstract summary: We study the case where only the charge is detected and investigate the properties of the emitted photon. The emitted photon state represents a twisted Bessel beam with a total angular momentum given by $ell-ell'$.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We consider the emission of a photon by a scalar charged particle in a constant and uniform magnetic field. In contrast to the conventional approach with both photon and outgoing charge being assumed to be detected, we study the case where only the charge is detected and investigate the properties of the emitted photon. The background magnetic field is taken into account exactly in the calculations and the charge is described by relativistic Landau states. It is shown that the emitted photon state represents a twisted Bessel beam with a total angular momentum given by $\ell-\ell'$, where $\ell$ and $\ell'$ are angular momentum quantum numbers of the initial and final charged particle, respectively. The majority of photons emitted by unpolarized charges, especially in the hard X-ray and $\gamma$-ray range and in critical and sub-critical magnetic fields, as compared to the Schwinger value of $H_c = 4.4\times 10^9$ T, turn out to be twisted with $\ell-\ell'\gtrsim 1$.

Related papers

• Absorption of a twisted photon by an electron in strong magnetic field [0.0]
  The work investigates absorption of a twisted photon by a relativistic electron in a strong magnetic field up to the Schwinger limit. It is found that total absorption cross sections decrease as angular momentum of the incident photon increases and increase as angular momentum of the initial electron grows. Our findings can help to improve the understanding of the QED processes in critical fields, typical for astrophysical environments.
  arXiv  Detail & Related papers  (2024-10-24T21:11:24Z)
• The quantum beam splitter with many partially indistinguishable photons: multiphotonic interference and asymptotic classical correspondence [44.99833362998488]
  We present the analysis of the quantum two-port interferometer in the $n rightarrow infty$ limit of $n$ partially indistinguishable photons. Our main result is that the output distribution is dominated by the $O(sqrtn)$ channels around a certain $j*$ that depends on the degree of indistinguishability. The form is essentially the doubly-humped semi-classical envelope of the distribution that would arise from $2 j*$ indistinguishable photons, and which reproduces the corresponding classical intensity distribution.
  arXiv  Detail & Related papers  (2023-12-28T01:48:26Z)
• Emission of twisted photons by a Dirac electron in a strong magnetic field [0.0]
  We derive the photon state as it evolves from the process itself. It is shown that the emitted photon state represents a twisted Bessel beam propagating along the field axis. The majority of the emitted photons turn out to be twisted with $ell-ell' gtrsim 1$, even when the magnetic field reaches the critical value.
  arXiv  Detail & Related papers  (2023-11-14T21:28:24Z)
• Quantum density matrix theory for a laser without adiabatic elimination of the population inversion: transition to lasing in the class-B limit [62.997667081978825]
  No class-B quantum density-matrix model is available to date, capable of accurately describing coherence and photon correlations within a unified theory. Here we carry out a density-matrix theoretical approach for generic class-B lasers, and provide closed equations for the photonic and atomic reduced density matrix in the Fock basis of photons. This model enables the study of few-photon bifurcations and non-classical photon correlations in class-B laser devices, also leveraging quantum descriptions of coherently coupled nanolaser arrays.
  arXiv  Detail & Related papers  (2022-05-26T16:33:51Z)
• Tomography of Ultra-relativistic Nuclei with Polarized Photon-gluon Collisions [3.6336843340576355]
  A linearly polarized photon can be quantized from the Lorentz-boosted electromagnetic field of a nucleus traveling at ultra-relativistic speed. In this experiment, the polarization was utilized in diffractive photoproduction to observe a unique spin interference pattern in the angular distribution of $rho0pi+pi-$ decays.
  arXiv  Detail & Related papers  (2022-04-04T16:14:20Z)
• Multi-Center Magnon Excitations Open the Entire Brillouin Zone to Terahertz Magnetometry of Quantum Magnets [42.72559625804617]
  The magnon density of states can be accessed over the entire Brillouin zone through three-center magnon excitations. The results of THz time-domain experiments agree remarkably well with linear spin-wave theory.
  arXiv  Detail & Related papers  (2022-03-08T19:04:24Z)
• Spin-1/2 particles under the influence of a uniform magnetic field in the interior Schwarzschild solution [62.997667081978825]
  relativistic wave equation for spin-1/2 particles in the interior Schwarzschild solution in the presence of a uniform magnetic field is obtained. Results are relevant to the physics of the interior of neutron stars, where both the gravitational and the magnetic fields are very intense.
  arXiv  Detail & Related papers  (2021-11-30T14:46:00Z)
• On the creation of charged massless fermion pair by a photon in crossed electromagnetic field [0.0]
  Creation of charged massless fermion pair by a photon in external constant crossed electromagnetic field is considered. We obtain the total probability of photon emission calculating elastic scattering amplitude of charged massive fermion in the electromagnetic field in the massless limit.
  arXiv  Detail & Related papers  (2020-08-13T09:29:07Z)
• Quantum field theory for spin operator of the photon [6.174721516017139]
  We discover the quantum operators for the spin angular momentum (SAM) $boldsymbolS_M= (1/c)int d3xboldsymbolpitimesboldsymbolA$ and orbital angular momentum (OAM) $boldsymbolL_M=- (1/c)int d3xpimuboldsymbolxtimesboldsymbolnablaA_mu$ of the photon. We derive the well-known OAM and SAM of classical electromagnetic
  arXiv  Detail & Related papers  (2020-04-08T01:51:22Z)
• Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a pulsed light wave [68.8204255655161]
  Research investigates the resonant high-energy spontaneous bremsstrahlung of ultrarelativistic electrons with considerable energies in the field of a nucleus and a quasimonochromatic laser wave.
  arXiv  Detail & Related papers  (2020-04-05T16:27:11Z)
• Optimal coupling of HoW$_{10}$ molecular magnets to superconducting circuits near spin clock transitions [85.83811987257297]
  We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides. Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
  arXiv  Detail & Related papers  (2019-11-18T11:03:06Z)

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.