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astro-ph.CO2025
Geometry of non-Gaussianity in transient non-attractor inflation
Mohammad Hossein Namjoo, Bahar Nikbakht
Inflationary models predicting abundant primordial black holes (PBHs) and large amplitude of scalar-induced gravitational waves (SIGWs) often rely on amplified fluctuations over li…
astro-ph.CO2025
Non-relativistic effective theories for fields with general potentials and their implications for cosmology
H. S. Modirzadeh, R. Moti, M. H. Namjoo
Non-relativistic effective field theories (NREFTs) play a crucial role in various areas of physics, from cold atom experiments to cosmology. In this paper, we present a systematic…