68 citations · 90 across the 2 of their papers we have counts for
7 papers
CMB spectral distortions from the decay of causally generated magnetic fields
Jacques M. Wagstaff, Robi Banerjee
We improve previous calculations of the CMB spectral distortions due to the decay of primordial magnetic fields. We focus our studies on causally generated magnetic fields at the e…
Extragalactic magnetic fields unlikely generated at the electroweak phase transition
Jacques M. Wagstaff, Robi Banerjee
In this letter we show that magnetic fields generated at the electroweak phase transition are most likely too weak to explain the void magnetic fields apparently observed today unl…
Magnetic field amplification by the small-scale dynamo in the early Universe
Jacques M. Wagstaff, Robi Banerjee, Dominik Schleicher +1
In this paper we show that the Universe is already strongly magnetized at very early epochs during cosmic evolution. Our calculations are based on the efficient amplification of we…
Eliminating the eta-problem in SUGRA Hybrid Inflation with Vector Backreaction
Konstantinos Dimopoulos, George Lazarides, Jacques M. Wagstaff
It is shown that, when the inflaton field modulates the gauge kinetic function of the gauge fields in supergravity realisations of inflation, the dynamic backreaction leads to a ne…
Particle Production of Vector Fields: Scale Invariance is Attractive
Konstantinos Dimopoulos, Jacques M. Wagstaff
In a model of an Abelian vector boson with a Maxwell kinetic term and non-negative mass-squared it is demonstrated that, under fairly general conditions during inflation, a scale-i…
Vector Curvaton without Instabilities
Konstantinos Dimopoulos, Mindaugas Karciauskas, Jacques M. Wagstaff
A vector curvaton model with a Maxwell kinetic term and varying kinetic function and mass during inflation is studied. It is shown that, if light until the end of inflation, the ve…