327 citations · 1.5k across the 39 of their papers we have counts for
43 papers
The Cosmological Constant and Dark Dimensions from Non-Supersymmetric Strings
Emilian Dudas, Susha Parameswaran, Marco Serra
We present a string theory construction in which the particle physics contributions to the one-loop vacuum energy exactly cancel, whilst the gravitational contributions are suppres…
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…
On (A)dS Solutions from Scherk-Schwarz Orbifolds
Susha Parameswaran, Marco Serra
We investigate the existence of dS vacua in supersymmetry-breaking Scherk-Schwarz toroidal compactifications of type II string theory, using the well-understood ingredients of curv…
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,…
Exponential Quintessence: curved, steep and stringy?
David Andriot, Susha Parameswaran, Dimitrios Tsimpis +2
We explore the possibility that our universe's current accelerated expansion is explained by a quintessence model with an exponential scalar potential, , keepi…
Dark energy with the help of interacting dark sectors
Joaquim M. Gomes, Edward Hardy, Susha Parameswaran
We analyse theories that do not have a de Sitter vacuum and cannot lead to slow-roll quintessence, but which nevertheless support a transient era of accelerated cosmological expans…