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

Villalba-Chávez, Selym

doi:10.1103/physrevd.81.105019

Cited by 13 publications

(8 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only in Ref. [25] were the asymptotic conditions investigated in the present work considered. The connection between the respective photon magnetic moment and M M M in Eq.…”

Section: Magnetic Moment Of Small Electromagnetic Perturbations Of Th...mentioning

confidence: 99%

“…[23] and discussed in Refs. [24] and [25]. In those works, it was defined as contributing to the photon energy as a function of both its momentum and the external field strength.…”

Section: Magnetic Moment Of Small Electromagnetic Perturbations Of Th...mentioning

confidence: 99%

“…The possible connection of the photon magnetic moment with the same notion introduced previously by Peréz Rojas and one of the present authors (Villalba-Chavez) [23] (see also Refs. [24,25]) will be discussed in a due place below. It looks at attribute of the photon interaction with an anisotropic medium.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

QED with external field: Hamiltonian treatment for anisotropic medium formed by the Lorentz-non-invariant vacuum

Villalba-Chavez,

Shabad

2012

Preprint

View full text Add to dashboard Cite

Nonlinear electrodynamics, QED included, is considered against the Lorentz-noninvariant external field background, treated as an anisotropic medium. Hamiltonian formalism is applied to electromagnetic excitations over the background, and entities of electrodynamics of media, such as field inductions and intensities, are made sense of in terms of canonical variables. Both conserved and nonconserved generators of space-time translations and rotations are defined on the phase space, and their Hamiltonian equations of motion and Dirac bracket relations, different from the Poincaré algebra, are established. Nonsymmetric, but-in return-gauge-invariant, energy-momentum tensor suggests a canonical momentum density other than the Poynting vector. A photon magnetic moment is found to govern the evolution of the photon angular momentum. It is determined by the antisymmetric part of the energy-momentum tensor.

show abstract

“…Only in Ref. [25] were the asymptotic conditions investigated in the present work considered. The connection between the respective photon magnetic moment and M M M in Eq.…”

Section: Magnetic Moment Of Small Electromagnetic Perturbations Of Th...mentioning

confidence: 99%

“…[23] and discussed in Refs. [24] and [25]. In those works, it was defined as contributing to the photon energy as a function of both its momentum and the external field strength.…”

Section: Magnetic Moment Of Small Electromagnetic Perturbations Of Th...mentioning

confidence: 99%

See 1 more Smart Citation

QED with external field: Hamiltonian treatment for anisotropic medium formed by the Lorentz-non-invariant vacuum

Villalba-Chavez,

Shabad

2012

Preprint

View full text Add to dashboard Cite

show abstract

“…The reasons for using these optical setups follows from a hypothetical coupling between the MCPs and a constant magnetic field. In such a context, the interaction would induce modifications on the dichroic and birefringent properties of the vacuum [23,24,25,26,27,28], a fact which constitutes a potential signal of their existences. Also high-precision photon regenerative experiments have been carried out in several collaborations [29,30,31,32,33,34,35,36].…”

Section: Introductionmentioning

confidence: 99%

Searching for minicharged particles via birefringence, dichroism and Raman spectroscopy of the vacuum polarized by a high-intensity laser wave

Villalba-Chávez

Müller²

2013

Annals of Physics

View full text Add to dashboard Cite

Absorption and dispersion of probe photons in the field of a high-intensity circularly polarized laser wave are investigated. The optical theorem is applied for determining the absorption coefficients in terms of the imaginary part of the vacuum polarization tensor. Compact expressions for the vacuum refraction indices and the photon absorption coefficients are obtained in various asymptotic regimes of interest. The outcomes of this analysis reveal that, far from the region relatively close to the threshold of the two-photon reaction, the birefringence and dichroism of the vacuum are small and, in some cases, strongly suppressed. On the contrary, in a vicinity of the region in which the photo-production of a pair occurs, these optical properties are manifest with lasers of moderate intensities. We take advantage of such a property in the search of minicharged particles by considering high-precision polarimetric experiments. In addition, Raman-like electromagnetic waves resulting from the inelastic part of the vacuum polarization tensor are suggested as an alternative form for finding exclusion limits on these hypothetical charge carriers. The envisaged parameters of upcoming high-intensity laser facilities are used for establishing upper bounds on the minicharged particles.

show abstract

“…It is precisely due to this linear dependence that an anomalous magnetic moment for mode-2 photons can be defined[84][85][86][87].…”

mentioning

confidence: 99%

Criticality and dominance of axion physics in highly magnetized vacuum

Villalba-Chávez,

Shabad,

Müller

2018

Preprint

Self Cite

View full text Add to dashboard Cite

In a constant and homogeneous magnetic background, quantum vacuum fluctuations due to axionlike fields can dominate over those associated with the electron-positron fields. Considering the framework of axion-electrodynamics, the self-energy operator for the electromagnetic field is determined with an accuracy to second-order in the axion-diphoton coupling. This outcome is utilized for establishing modifications to the propagation characteristics of photons and to the Coulomb potential of a static pointlike charge. Notably, in the magnetosphere of a neutron star, the effect of photon capture by the magnetic field, known in QED as relating to gamma-quanta, is extended in axion electrodynamics to include X-ray photons with the result that a specially polarized part of the heat radiation from the surface is canalized along the magnetic field. Besides, for field strengths larger than the critical scale associated with this theory, the modified Coulomb potential is of Yukawa-type in the direction perpendicular to the magnetic field at distances much smaller than the Compton wavelength of an axion, while along the field it follows approximately the Coulomb law at any length scale. We find that at unlimitedly large magnetic fields the longstanding problem -overcome in QED -that the ground-state energy of a hydrogen atom is unbounded from below, is reinstated. However, in axion-electrodynamics this unboundedness is cut off because the largest magnetic field treatable within this theory is limited by the unitarity of the associated scattering matrix.

show abstract

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

Cited by 13 publications

References 45 publications

QED with external field: Hamiltonian treatment for anisotropic medium formed by the Lorentz-non-invariant vacuum

QED with external field: Hamiltonian treatment for anisotropic medium formed by the Lorentz-non-invariant vacuum

Searching for minicharged particles via birefringence, dichroism and Raman spectroscopy of the vacuum polarized by a high-intensity laser wave

Criticality and dominance of axion physics in highly magnetized vacuum

Contact Info

Product

Resources

About