198 citations · 1k across the 36 of their papers we have counts for
12 papers · 1 filter
Inflation-Produced Magnetic Fields in R^n F^2 and I F^2 models
L. Campanelli, P. Cea, G. L. Fogli +1
We re-analyze the production of seed magnetic fields during Inflation in (R/m^2)^n F_{μν}F^{μν} and I F_{μν}F^{μν} models, where n is a positive integer, R the Ricci scalar, m a ma…
Inflation-Produced Magnetic Fields in Nonlinear Electrodynamics
L. Campanelli, P. Cea, G. L. Fogli +1
We study the generation of primeval magnetic fields during inflation era in nonlinear theories of electrodynamics. Although the intensity of the produced fields strongly depends on…
Cosmic Microwave Background Quadrupole and Ellipsoidal Universe
L. Campanelli, P. Cea, L. Tedesco
Recent Wilkinson Microwave Anisotropy Probe (WMAP) data confirm the Cosmic Microwave Background (CMB) quadrupole anomaly. We further elaborate our previous proposal that the quadru…
Ellipsoidal Universe Can Solve The CMB Quadrupole Problem
L. Campanelli, P. Cea, L. Tedesco
The recent three-year WMAP data have confirmed the anomaly concerning the low quadrupole amplitude compared to the best-fit ΛCDM prediction. We show that, allowing the large-scale…
Time Variation of the Fine Structure Constant in the Spacetime of a Domain Wall
L. Campanelli, P. Cea, L. Tedesco
The gravitational field produced by a domain wall acts as a medium with spacetime-dependent permittivity ε. Therefore, the fine structure constant α= e^2/4 πεwill be a time-depende…
Baryogenesis and CP-Violating Domain Walls in the Background of a Magnetic Field
Leonardo Campanelli, Paolo Cea, Gian Luigi Fogli +1
Within the domain wall-mediated electroweak baryogenesis, we study fermion scattering off a CP-violating wall in the background of an uniform magnetic field. In particular, we calc…