Quantum Electrodynamics in Strong Magnetic Fields. I. Electron States

Melrose, D. B.; Parle, A. J.

doi:10.1071/ph830755

Cited by 83 publications

(99 citation statements)

References 5 publications

(12 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the moderate vacuum dispersion present in magnetar fields (see §10) may critically depend on higher order (non-linear) contributions from the polarization tensor (e.g. Melrose and Parle 1983). If Adler's selection rules are in fact ubiquitous it has profound implications, since it means that the only polarization mode permitted to split produces only photons of the mode that cannot split.…”

Section: Photon Splittingmentioning

confidence: 99%

“…Given the different spin dependence of the ST and JL eigenstates, one must use caution in making the appropriate choice when treating spin-dependent processes. and Melrose and Parle (1983) have noted that the ST eigenstates have desirable properties that the JL do not possess, such as being eigenfunctions of the Hamiltonian including radiation corrections, having symmetry between positron and electron states, and diagonalization of the self-energy shift operator. As found by Graziani (1993), the ST wavefunctions also diagonalize the Landau-Dirac operator and are the physically correct choices for spin-dependent treatments and in incorporating widths in the scattering cross section.…”

Section: Electrons In Strong Magnetic Fieldsmentioning

confidence: 99%

See 1 more Smart Citation

Physics of strongly magnetized neutron stars

Harding¹,

Lai²

2006

Rep. Prog. Phys.

809

763

View full text Add to dashboard Cite

Abstract. There has recently been growing evidence for the existence of neutron stars possessing magnetic fields with strengths that exceed the quantum critical field strength of 4.4 × 10 13 G, at which the cyclotron energy equals the electron rest mass. Such evidence has been provided by new discoveries of radio pulsars having very high spin-down rates and by observations of bursting gamma-ray sources termed magnetars. This article will discuss the exotic physics of this high-field regime, where a new array of processes becomes possible and even dominant, and where familiar processes acquire unusual properties. We review the physical processes that are important in neutron star interiors and magnetospheres, including the behavior of free particles, atoms, molecules, plasma and condensed matter in strong magnetic fields, photon propagation in magnetized plasmas, free-particle radiative processes, the physics of neutron star interiors, and field evolution and decay mechanisms. Application of such processes in astrophysical source models, including rotation-powered pulsars, soft gamma-ray repeaters, anomalous X-ray pulsars and accreting X-ray pulsars will also be discussed. Throughout this review, we will highlight the observational signatures of high magnetic field processes, as well as the theoretical issues that remain to be understood.

show abstract

Section: Photon Splittingmentioning

confidence: 99%

Section: Electrons In Strong Magnetic Fieldsmentioning

confidence: 99%

Physics of strongly magnetized neutron stars

Harding¹,

Lai²

2006

Rep. Prog. Phys.

809

763

View full text Add to dashboard Cite

show abstract

“…Previously, the quantum electrodynamics (QED) results of Compton scattering cross sections were Ðrst derived by Herold (1979) for electrons with ground initial and Ðnal states. Then, the QED cross sections for various initial and Ðnal electron states were calculated by Melrose & Parle (1983) and Daugherty & Harding (1986). Finally, Bussard, Alexander, & Mesaros (1986) presented the QED results for electrons with arbitrary initial and Ðnal states.…”

Section: Polarization Features Of the Outgoing Scattered Waves From Amentioning

confidence: 99%

An Inverse Compton Scattering Model of Pulsar Emission. III. Polarization

Liu

Han

et al. 2000

ApJ

View full text Add to dashboard Cite

Qiao and his collaborators recently proposed an inverse Compton scattering model to explain radio emission from pulsars. In this paper, we investigate the polarization properties of pulsar emission in the model. First of all, using the lower frequency approximation, we derived the analytical amplitude of the inverse Compton scattered wave of a single electron in a strong magnetic Ðeld. We found that the outgoing radio emission of a single relativistic electron scattering o † the "" low-frequency waves ÏÏ produced by gap sparking should be linearly polarized and have no circular polarization at all. However, considering the coherency of the emission from a bunch of electrons, we found that the outgoing radiation from the inner part of the emission beam, i.e., that from the lower emission altitudes, preferentially has to have circular polarization. Computer simulations show that the polarization properties, such as the sense reversal of circular polarization near the pulse center, the S-shape of position angle swing of the linear polarization, and a strong linear polarization in conal components, can be reproduced in the ICS model.

show abstract

“…[31]. The treatment of charged particles and plasmas using quantum theory has received attention in astrophysical settings, especially in strongly mag- * Electronic address: mattias.marklund@physics.umu.se † Electronic address: gert.brodin@physics.umu.se netized environments [32,33]. For example, effects of quantum field theory on the linear response of an electron gas has been analyzed [34], results concerning the spin-dependence of cyclotron decay on strong magnetic fields has been presented [35], and the propagation of quantum electrodynamical waves in strongly magnetized plasmas has been considered [36].…”

mentioning

confidence: 99%

Dynamics of Spin-12Quantum Plasmas

2007

View full text Add to dashboard Cite

The fully nonlinear governing equations for spin 1 2 quantum plasmas are presented. Starting from the Pauli equation, the relevant plasma equations are derived, and it is shown that nontrivial quantum spin couplings arise, enabling studies of the combined collective and spin dynamics. The linear response of the quantum plasma in an electron-ion system is obtained and analyzed. Applications of the theory to solid state and astrophysical systems as well as dusty plasmas are pointed out.PACS numbers: 52.27.-h, 52.27. Gr, 67.57.Lm There is currently a great deal of interest in investigating collective plasma modes [1,2,3,4,5,6,7,8] in quantum plasmas, as such plasmas could be of relevance in nano-scale electro-mechanical systems [9,10,11], in microplasmas and dense laser-plasmas [12], and laser interactions with atomic systems [13,14]. For example, Refs.[1] and [3,4,5] used quantum transport models in order to derive modified dispersion relations for Langmuir and ion-acoustic waves, while Shukla & Stenflo [15] ionvestigated drift modes in nonuniform quantum magnetoplasmas. Moreover, it is known that cold quantum plasmas can support new dust modes [16,17]. In Ref.[8] it was shown that electron quantum plasmas could support highly stable dark solitons and vortices. Further examples of quantum plasmas and the range of validity of their descriptions has been discussed recently in Ref. [18]. The above studies of quantum plasmas have used models based on the Schrödinger description of the electron. It is expected that new and possible important effects could appear as further quantum effects are incorporated in models describing the quantum plasma particles. The coupling of spin to classical motion has attracted interest in the literature (see, e.g., [19,20,21,22,23,24,25,26,27,28,29,30,31]). Much work has been done concerning single particle spin effects in external field configurations, such as intense laser fields [22,23,24,25,26,27], and the possible experimental signatures thereof. However, there have also been interest in excitations of collective modes in spin systems, such as spin waves, in a wide scientific community. For example, in Refs. [19,20,21] hydrodynamical models including spin was presented, and further theory concerning spin, angular momentum, and the forces related to spin was discussed in Refs. [29] and [30]. Moreover, spin waves in spinor Bose condensates has recently been discussed in, e.g., Ref. [31]. The treatment of charged particles and plasmas using quantum theory has received attention in astrophysical settings, especially in strongly mag- * Electronic address: mattias.marklund@physics.umu.se † Electronic address: gert.brodin@physics.umu.se netized environments [32,33]. For example, effects of quantum field theory on the linear response of an electron gas has been analyzed [34], results concerning the spin-dependence of cyclotron decay on strong magnetic fields has been presented [35], and the propagation of quantum electrodynamical waves in strongly magnetized plasmas has been considered ...

show abstract

Quantum Electrodynamics in Strong Magnetic Fields. I. Electron States

Cited by 83 publications

References 5 publications

Physics of strongly magnetized neutron stars

Physics of strongly magnetized neutron stars

An Inverse Compton Scattering Model of Pulsar Emission. III. Polarization

Dynamics of Spin-12Quantum Plasmas

Contact Info

Product

Resources

About