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3 papers
A universal constraint on axion non-Abelian dynamics during inflation
Ema Dimastrogiovanni, Matteo Fasiello, Martino Michelotti +1
Inflationary models equipped with Chern-Simons coupling between their axion and gauge sectors exhibit an array of interesting signals including a testable chiral gravitational wave…
Scale-dependent chirality as a smoking gun for Abelian gauge fields during inflation
Ogan Özsoy, Alexandros Papageorgiou, Matteo Fasiello
Axion-inflation models are a compelling candidate as a mechanism behind the accelerated expansion in the early universe in light of the possibility to embed them in higher dimensio…
Vector dark matter, inflation and non-minimal couplings with gravity
Ogan Özsoy, Gianmassimo Tasinato
We propose a cosmological dark matter production mechanism in the form of a longitudinal massive vector boson. We build upon the work of Graham et.al. including non-minimal couplin…