Particle creation via relaxing hypermagnetic knots

Adam, C.; Muratori, Bruno; Nash, Charles

doi:10.1103/physrevd.62.105027

Cited by 12 publications

(11 citation statements)

References 26 publications

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“…It has been speculated that baryogenesis can be related to the presence of hypermagnetic knots and a similar way of thinking has been pursued in [69,70]. The themes discussed in [66,67] stimulated various investigations both on the dynamics of particles in hypermagnetic knot configurations [71,72,73] as well as on related ideas [74,75].…”

Section: Circular Polarization From Magnetic Knotsmentioning

confidence: 97%

Circular dichroism, magnetic knots, and the spectropolarimetry of the cosmic microwave background

Giovannini¹

2010

Phys. Rev. D

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When the last electron-photon scattering takes place in a magnetized environment, the degree of circular polarization of the outgoing radiation depends upon the magnetic field strength. After deriving the scattering matrix of the process, the generalized radiative transfer equations are deduced in the presence of the relativistic fluctuations of the geometry and for all the four brightness perturbations. The new system of equations is solved under the assumption that the incident radiation is not polarized. The induced V-mode polarization is analyzed both analytically and numerically. The corresponding angular power spectra are calculated and compared with the measured (or purported) values of the linear polarizations (i.e. E-mode and B-mode) as they arise in the concordance model and in its neighboring extensions. Possible connections between the V-mode polarization of the Cosmic Microwave background and the topological properties of the magnetic flux lines prior to equality are outlined and briefly explored in analogy with the physics of magnetized sun spots.

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Section: Circular Polarization From Magnetic Knotsmentioning

confidence: 97%

Circular dichroism, magnetic knots, and the spectropolarimetry of the cosmic microwave background

Giovannini¹

2010

Phys. Rev. D

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“…Such a field configuration will source the anomaly equation for each Standard Model fermion field since they all carry hypercharge. Particle production due to the anomaly can also be understood as the emergence of filled states from the Dirac sea into the positive energy sector, just as in the case of the Abelian chiral anomaly in 3+1 dimensions [39].…”

Section: Namementioning

confidence: 99%

Leptogenesis and primordial magnetic fields

Long

Sabancilar

Vachaspati³

2014

J. Cosmol. Astropart. Phys.

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The anomalous conversion of leptons into baryons during leptogenesis is shown to produce a right-handed helical magnetic field; in contrast, the magnetic field produced during electroweak baryogenesis is known to be left-handed. If the cosmological medium is turbulent, the magnetic field evolves to have a present day coherence scale ∼ 10 pc and field strength ∼ 10 −18 Gauss. This result is insensitive to the energy scale at which leptogenesis took place. Observations of the amplitude, coherence scale, and helicity of the intergalactic magnetic field promise to provide a powerful probe of physics beyond the Standard Model and the very early universe.

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“…In Refs. ͓8,9͔ the first examples of Dirac operators with multiple zero modes were given, thereby demonstrating the existence of the phenomenon of zero mode degeneracy. Further, a relation between the number of zero modes and a certain topological linking number ͑the Hopf index͒ of the corresponding gauge field was established in Ref.…”

mentioning

confidence: 90%

“…where the l.h.s. of ( 4) is the change in particle number between t i and t f [13]. If we further assume that the change in particle number, Q(t f ) − Q(t i ), is two times the number of levels (zero modes) L crossed in the (adiabatic) change from A(t i , x) to A(t f , x) -as is usually assumed -then the equation…”

mentioning

confidence: 99%