4 papers
Schwinger effect in axion inflation on a lattice
Oksana Iarygina, Evangelos I. Sfakianakis, Axel Brandenburg
We present the first lattice simulations of the nonlinear evolution after axion inflation by self-consistently incorporating currents arising from Schwinger pair production. The ta…
Lattice simulations of axion-U(1) inflation: gravitational waves, magnetic fields, and scalar statistics
Ramkishor Sharma, Axel Brandenburg, Kandaswamy Subramanian +1
We numerically study axion-U(1) inflation, focusing on the regime where the coupling between axions and gauge fields results in significant backreaction from the amplified gauge fi…
Intergalactic medium rotation measure of primordial magnetic fields
Salome Mtchedlidze, Paola DomÃnguez-Fernández, Xiaolong Du +5
The Faraday rotation effect, quantified by the Rotation Measure (RM), is a powerful probe of the large-scale magnetization of the Universe - tracing magnetic fields not only on gal…
Magnetogenesis from axion-SU(2) inflation
Axel Brandenburg, Oksana Iarygina, Evangelos I. Sfakianakis +1
We describe a novel proposal for inflationary magnetogenesis by identifying the non-Abelian sector of Spectator Chromo Natural Inflation (SCNI) with the sector…