2 citations · 2 across the 2 of their papers we have counts for
6 papers
Hidden quantum-informatic symmetries of quasi-de Sitter backgrounds
Suddhasattwa Brahma, Jaime Calderon-Figueroa, Xiancong Luo +1
We investigate how degeneracies in quasi-de Sitter backgrounds, in the sense of Wands' duality, are reflected in real-space quantum correlations of primordial perturbations. Using…
Heterotic Warm Inflation
Arjun Berera, Heliudson Bernardo, Suddhasattwa Brahma +3
We propose a two-field model of warm inflation motivated by a heterotic string construction, involving an axion and a dilaton-like scalar field with non-trivial kinetic mixing. Gau…
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…
Is the CMB revealing signs of pre-inflationary physics?
Suddhasattwa Brahma, Jaime Calderón-Figueroa
Given the latest observational constraints coming from the joint analyses of the Atacama Cosmology Telescope, the Planck Satellite and other missions, we point out the possibility…
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…
Time-convolutionless cosmological master equations: Late-time resummations and decoherence for non-local kernels
Suddhasattwa Brahma, Jaime Calderón-Figueroa, Xiancong Luo
We revisit a simple toy model of two scalar fields in de Sitter space, playing the roles of "system" and "environment" degrees of freedom, which interact with each other. We show t…