4 papers
Decoupling of large-scale, adiabatic inflationary perturbations from enhanced small-scale modes at one-loop
Laura Iacconi, David Mulryne, David Seery
We reconsider back-reaction from large amplitude, short-scale perturbations onto a long wavelength adiabatic mode. In a loop expansion of the long-mode power spectrum, this back-re…
Stochastic instantons and the tail of the inflationary density perturbation
Jaime Calderón-Figueroa, David Seery
In the "stochastic formalism", the statistics of the inflationary density perturbation are obtained from the first passage distribution of a stochastic process. We develop a…
Primordial black holes in Randall-Sundrum: Cosmological signatures
Itzi Aldecoa-Tamayo, Christian T. Byrnes, David Seery
We reconsider primordial black hole physics in Randall-Sundrum Type-II universes, focusing on constraints from cosmological and astrophysical observables. We pay particular attenti…
The special case of slow-roll attractors in de Sitter: Non-Markovian noise and evolution of entanglement entropy
Suddhasattwa Brahma, Jaime Calderón-Figueroa, Xiancong Luo +1
We analyse the evolution of the reduced density matrix of inflationary perturbations, coupled to a heavy entropic field via the leading-order term within the Effective Field Theory…