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astro-ph.CO2025
A critical value of the inflationary tensor-to-scalar ratio from inhomogeneous inflation
Panagiotis Giannadakis, Matthew Elley, Raphael Flauger +1
We show that, for a given fixed value of the number of e-folds of the homogeneous solution, inflation succeeds with order unity inhomogeneities in the initial conditions above a ch…
astro-ph.CO2025★ 1 cited
Non-linear Dynamics and Primordial Black Hole Formation During Kination
Cheng Cheng, Panagiotis Giannadakis, Lucien Heurtier +1
We investigate the effects of large scalar inhomogeneities during the kination epoch, a period in which the universe's dynamics are dominated by the kinetic energy of a scalar fiel…