Magnetic Field Effect in the Fine-Structure Constant and Electron Dynamical Mass
arXiv:1910.11245 · doi:10.1103/PhysRevD.100.096006
Abstract
We investigate the effect of an applied constant and uniform magnetic field in the fine-structure constant of massive and massless QED. In massive QED, it is shown that a strong magnetic field removes the so called Landau pole and that the fine-structure constant becomes anisotropic having different values along and transverse to the field direction. Contrary to other results in the literature, we find that the anisotropic fine-structure constant always decreases with the field. We also study the effect of the running of the coupling constant with the magnetic field on the electron mass. We find that in both cases of massive and massless QED, the electron dynamical mass always decreases with the magnetic field, what can be interpreted as an inverse magnetic catalysis effect.
To appear in Phys. Rev. D
References in corpus (15)
- Electric Field Effect in Atomically Thin Carbon Films
- Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals
- Interactions and phase transitions on graphene's honeycomb lattice
- Equation of State of a Dense and Magnetized Fermion System
- The Importance of Asymptotic Freedom for the Pseudocritical Temperature in Magnetized Quark Matter
- Excitonic gap, phase transition, and quantum Hall effect in graphene
- Quark Antiscreening at Strong Magnetic Field and Inverse Magnetic Catalysis
- (In-)Significance of the Anomalous Magnetic Moment of Charged Fermions for the Equation of State of a Magnetized and Dense Medium
- Dynamically Induced Zeeman Effect in Massless QED
- Electric field of a pointlike charge in a strong magnetic field and ground state of a hydrogenlike atom
- Dynamically Generated Anomalous Magnetic Moment in Massless QED
- Dynamical mass generation in QED with magnetic fields: arbitrary field strength and coupling constant
- Positronium collapse and the maximum magnetic field in pure QED
- A new look at the modified Coulomb potential in a strong magnetic field
- Thermodynamics of Neutrons in a Magnetic Field and its Implications for Neutron Stars