Anomalous magnetic moment of the electron in a magnetic field

1976 ◽  
Vol 15 (5) ◽  
pp. 149-152 ◽  
Author(s):  
V. N. Baier ◽  
V. M. Katkov ◽  
V. M. Strakhovenko
Keyword(s):  
Magnetic Field ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment

scholarly journals Neutron anomalous magnetic moment in dense magnetized systems

2018 ◽  
Vol 27 (02) ◽  
pp. 1850011
Author(s):  
Zeinab Rezaei
Keyword(s):  
Magnetic Field ◽  
Equation Of State ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Nuclear Potential ◽  
Order Constraint ◽  
The Magnetic Field

In this work, we calculate the neutron anomalous magnetic moment (AMM) supposing that this value can depend on the density and magnetic field of the system. We employ the lowest-order constraint variation (LOCV) method and [Formula: see text] nuclear potential to calculate the medium dependency of the neutron AMM. It is confirmed that the neutron AMM increases by increasing the density, while it decreases as the magnetic field grows. The energy and equation of state for the system have also been investigated.

scholarly journals The Electrodynamics of Neutrinos in Dispersive Media

1990 ◽  
Vol 142 ◽  
pp. 35-38
Author(s):  
V.N. Oraevsky ◽  
V.B. Semikoz
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Charge Distribution ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Dispersive Media ◽  
Mean Square ◽  
Vector Bosons ◽  
Electromagnetic Characteristics ◽  
The Mean

Neutrinos interacting with the vacuum of vector bosons and leptons possess important vacuum electromagnetic characteristics: viz., the anomalous magnetic moment Δμvacν and the mean-square radius of charge distribution <r2>1/2. As a result, neutrinos, just like neutrons, may interact with an external magnetic field.

SELF-MAGNETIZATION IN ELECTROWEAK VACUUM AND IN VERY DENSE SYSTEMS

2011 ◽  
Vol 20 (supp02) ◽  
pp. 168-175
Author(s):  
HUGO PÉREZ ROJAS ◽  
ELIZABETH RODRÍGUEZ QUERTS
Keyword(s):  
Magnetic Field ◽  
High Temperature ◽  
External Field ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
W Bosons ◽  
Large Density ◽  
Electron Positron ◽  
Vector Bosons ◽  
The Magnetic Field

For charged vector bosons (W bosons) of mass mw, magnetization diverges for B → Bcw, which suggests that if the magnetic field is large enough, it can be self-consistently maintained. For photons bearing an anomalous magnetic moment, having a sufficiently large density, their contribution to magnetization might become of the same order than the applied external field, leading also to self-magnetization. We discuss these models in connection to the case of radiation in equilibrium at high temperature (T ~ mc2) coexisting with hot magnetized electron-positron pairs.

scholarly journals Vacuum instability due to the creation of neutral fermion with anomalous magnetic moment by magnetic-field inhomogeneities

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
T. C. Adorno ◽  
Zi-Wang He ◽  
S. P. Gavrilov ◽  
D. M. Gitman
Keyword(s):  
Magnetic Field ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Strong Field ◽  
Magnetic Moments ◽  
Particle Creation ◽  
Magnetic Field Inhomogeneity ◽  
Field Inhomogeneity ◽  
Pauli Equation ◽  
Vacuum Instability

Abstract We study neutral fermions pair creation with anomalous magnetic moment from the vacuum by time-independent magnetic-field inhomogeneity as an external background. We show that the problem is technically reduced to the problem of charged-particle creation by an electric step, for which the nonperturbative formulation of strong-field QED is used. We consider a magnetic step given by an analytic function and whose inhomogeneity may vary from a “gradual” to a “sharp” field configuration. We obtain corresponding exact solutions of the Dirac-Pauli equation with this field and calculate pertinent quantities characterizing vacuum instability, such as the differential mean number and flux density of pairs created from the vacuum, vacuum fluxes of energy and magnetic moment. We show that the vacuum flux in one direction is formed from fluxes of particles and antiparticles of equal intensity and with the same magnetic moments parallel to the external field. Backreaction to the vacuum fluxes leads to a smoothing of the magnetic-field inhomogeneity. We also estimate critical magnetic field intensities, near which the phenomenon could be observed.

scholarly journals Neutrino Spin and Dispersion in Magnetized Medium

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
P. A. Eminov
Keyword(s):  
Magnetic Field ◽  
Real Time ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Energy Shift ◽  
Neutrino Energy ◽  
Imaginary Time ◽  
Superstrong Magnetic Field ◽  
Electron Positron ◽  
Free Case

The full energy shift of a massive Dirac neutrino in magnetized electron-positron plasma was investigated using the Matsubara imaginary time and real time formalisms. The neutrino dispersion in the magnetized medium was analyzed as a function of the neutrino spin and mass. It was shown that in a superstrong magnetic field the CP-symmetric plasma contribution to the neutrino energy greatly exceeds the analogous correction in the field-free case. The contribution of plasma to the anomalous magnetic moment of a neutrino was obtained.

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