Nonlinear electromagnetic and gravitational actions of neutron star fields on electromagnetic wave propagation

Денисов, В И; Свертилов, С. И.

doi:10.1103/physrevd.71.063002

Cited by 23 publications

(21 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We want to remark that Eq. (49) might play an important role in the evaluation of the magnetic effect on gravitational lenses in the vicinity of highly magnetized stellar objects [43,44].…”

Section: B Discussionmentioning

confidence: 99%

Photon magnetic moment and vacuum magnetization in an asymptotically large magnetic field

Villalba-Chávez

2010

Phys. Rev. D

View full text Add to dashboard Cite

We consider the effect of the photon radiative correction on the vacuum energy in a superstrong magnetic field. The notion of a photon anomalous magnetic moment is analyzed and its connection with the quasiparticle character of the electromagnetic radiation is established. In the infrared domain the magnetic moment turns out to be a vector with two orthogonal components in correspondence with the cylindrical symmetry imposed by the external field. The possibility of defining such quantity in the high energy limit is studied as well. Its existence suggests that the electromagnetic radiation is a source of magnetization to the whole vacuum and thus its electron-positron zero-point energy is slightly modified. The corresponding contribution to the vacuum magnetization density is determined by considering the individual contribution of each vacuum polarization eigenmode in the Euler-Heisenberg Lagrangian. A paramagnetic response is found in one of them, whereas the remaining ones are diamagnetic. Additional issues concerning the transverse pressures are analyzed.

show abstract

“…We want to remark that Eq. (49) might play an important role in the evaluation of the magnetic effect on gravitational lenses in the vicinity of highly magnetized stellar objects [43,44].…”

Section: B Discussionmentioning

confidence: 99%

Photon magnetic moment and vacuum magnetization in an asymptotically large magnetic field

Villalba-Chávez

2010

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

“…Abishev et al (2016) estimated that the delay observed by a detector at Earth would be of the order t ≈ 10 −8 s, but unfortunately too weak for current instrumentation. Denisov & Svertilov (2005) showed that gravity can be combined with QED to study light propagation in a realistic neutron star environment. See also Freytsis & Gralla (2016) for a broader discussion about force-free theories including a general Lagrangian not necessarily issued from quantum electrodynamics.…”

Section: Quantum Electrodynamicsmentioning

confidence: 99%

Theory of pulsar magnetosphere and wind

Pétri

2016

J. Plasma Phys.

View full text Add to dashboard Cite

Neutron stars are fascinating astrophysical objects immersed in strong gravitational and electromagnetic fields, at the edge of our current theories. These stars manifest themselves mostly as pulsars, emitting a timely very stable and regular electromagnetic signal. Even though discovered almost fifty years ago, they still remain mysterious compact stellar objects. In this review, we summarize the most fundamental theoretical aspects of neutron star magnetospheres and winds. The main competing models explaining their radiative properties like multi-wavelength pulse shapes and spectra and the underlying physical processes such as pair creation and radiation mechanisms are scrutinized. A global but still rather qualitative picture slowly emerges thanks to recent advances in numerical simulations on the largest scales. However considerations about pulsar magnetospheres remain speculative. For instance, the exact composition of the magnetospheric plasma is not yet known. Is it solely filled with a mixture of e ± leptons or does it contain a non-negligible fraction of protons and/or ions? Is it almost entirely filled or mostly empty except for some small anecdotal plasma filled regions? Answers to these questions will strongly direct the description of the magnetosphere to seemingly contradictory results leading sometimes to inconsistencies. Nevertheless, accounts are given as to the latest developments in the theory of pulsar magnetospheres and winds, the existence of a possible electrosphere and physical insight obtained from related observational signatures of multi-wavelength pulsed emission.

show abstract

“…Due to the difference in wave propagation velocities induced by vacuum birefringence the time lag between the arrival of the fast and the slow mode to the detector is proportional to vacuum refractive index difference for each polarization mode. The calculations in perturbative QED regime show the detectability of the effect [7] and give the value for the time lag ∆t ∼ 10 −7 s. The results of calculations are valid when the pulsar field B < B c , however the existence of pulsars with the overcritical field (for instance B1509-58 with the B ∼ 1.5 · 10 14 G) provides an attractive possibility to enhance the estimates for the time lag. Such calculations require of vacuum birefringence consideration outside the perturbative regime.…”

Section: Jhep05(2017)105mentioning

confidence: 89%

“…3. It is easy to verify that in low-field limit b 0 ≪ 1 the expressions (4.5) take the form of perturbative QED effective metric tensor obtained in [7]:…”

Section: Qed Vacuum Birefringence Extension On Nonperturbative Regimementioning

confidence: 99%

See 1 more Smart Citation

Nonperturbative QED vacuum birefringence

Денисов

Dolgaya

Соколов

2017

J. High Energ. Phys.

View full text Add to dashboard Cite

In this paper we represent nonperturbative calculation for one-loop Quantum Electrodynamics (QED) vacuum birefringence in presence of strong magnetic field. The dispersion relations for electromagnetic wave propagating in strong magnetic field point to retention of vacuum birefringence even in case when the field strength greatly exceeds Sauter-Schwinger limit. This gives a possibility to extend some predictions of perturbative QED such as electromagnetic waves delay in pulsars neighbourhood or wave polarization state changing (tested in PVLAS) to arbitrary magnetic field values. Such expansion is especially important in astrophysics because magnetic fields of some pulsars and magnetars greatly exceed quantum magnetic field limit, so the estimates of perturbative QED effects in this case require clarification.

show abstract

Nonlinear electromagnetic and gravitational actions of neutron star fields on electromagnetic wave propagation

Cited by 23 publications

References 25 publications

Photon magnetic moment and vacuum magnetization in an asymptotically large magnetic field

Photon magnetic moment and vacuum magnetization in an asymptotically large magnetic field

Theory of pulsar magnetosphere and wind

Nonperturbative QED vacuum birefringence

Contact Info

Product

Resources

About