31 citations · 35 across the 4 of their papers we have counts for
5 papers
Closing in on -attractors
Laura Iacconi, Sukannya Bhattacharya, Matteo Fasiello +1
Recent observations of cosmic microwave background (CMB) anisotropies combined with large-scale structure may point towards higher values of the scalar spectral index, . This…
On the prospects of thermalization of axion-SU(2) inflation
Sukannya Bhattacharya, Matteo Fasiello, Alexandros Papageorgiou +1
Axion inflation models coupled to a gauge sector via a Chern-Simons term exhibit an array of interesting phenomenology including a chiral gravitational wave spectrum and primordial…
Cosmological tests of quintessence in quantum gravity
Sukannya Bhattacharya, Giulia Borghetto, Ameek Malhotra +3
We use a suite of the most recent cosmological observations to test models of dynamical dark energy motivated by quantum gravity. Specifically, we focus on hilltop quintessence sce…
Cosmological constraints on curved quintessence
Sukannya Bhattacharya, Giulia Borghetto, Ameek Malhotra +3
Dynamical dark energy has gained renewed interest due to recent theoretical and observational developments. In the present paper, we focus on a string-motivated dark energy set-up,…
CMB spectral distortions from enhanced primordial perturbations: the role of spectator axions
Margherita Putti, Nicola Bartolo, Sukannya Bhattacharya +1
Primordial tensor modes can induce Cosmic Microwave Background spectral distortions during horizon re-entry. We investigate a specific mechanism proposed for this purpose, characte…