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Post-Inflationary Gravitino Production Revisited
John Ellis, Marcos A. G. Garcia, Dimitri V. Nanopoulos +2
We revisit gravitino production following inflation. As a first step, we review the standard calculation of gravitino production in the thermal plasma formed at the end of post-inf…
Scale-dependent gravitational waves from a rolling axion
Ryo Namba, Marco Peloso, Maresuke Shiraishi +2
We consider a model in which a pseudo-scalar field rolls for some e-folds during inflation, sourcing one helicity of a gauge field. These fields are only gravitationally couple…
The effect of massive neutrinos on the BAO peak
Marco Peloso, Massimo Pietroni, Matteo Viel +1
We study the impact of neutrino masses on the shape and height of the BAO peak of the matter correlation function, both in real and redshift space. In order to describe the nonline…
Leptogenesis Via Neutrino Production During Higgs Condensate Relaxation
Lauren Pearce, Louis Yang, Alexander Kusenko +1
During inflation, scalar fields, including the Higgs boson, may acquire a nonzero vacuum expectation value, which must later relax to the equilibrium value during reheating. In the…
Parity-violating CMB correlators with non-decaying statistical anisotropy
Nicola Bartolo, Sabino Matarrese, Marco Peloso +1
We examine the cosmological correlators induced by the simultaneous breaking of parity and of statistical isotropy, e.g., in presence of the coupling ${\cal L} = f(ϕ) ( - \frac{1}{…
Trajectories with suppressed tensor-to-scalar ratio in Aligned Natural Inflation
Marco Peloso, Caner Unal
In Aligned Natural Inflation, an alignment between different potential terms produces an inflaton excursion greater than the axion scales in the potential. We show that, starting f…