160 citations · 226 across the 6 of their papers we have counts for
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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…
Inflation and Primordial Black Holes
Ogan Özsoy, Gianmassimo Tasinato
We review conceptual aspects of inflationary scenarios able to produce primordial black holes, by amplifying the size of curvature fluctuations to the level required for triggering…
New constraints on axion-gauge field dynamics during inflation from and BICEP/Keck data sets
Paolo Campeti, Ogan Özsoy, Ippei Obata +1
We present new constraints on spectator axion- gauge field interactions during inflation using the latest (PR4) and BICEP/Keck 2018 data releases. This model c…
Consistency conditions and primordial black holes in single field inflation
Ogan Özsoy, Gianmassimo Tasinato
We discuss new consistency relations for single field models of inflation capable of generating primordial black holes (PBH), and their observational implications for CMB -space…