31 citations · 60 across the 10 of their papers we have counts for
11 papers
Probing Cosmic Expansion and Early Universe with Einstein Telescope
Angelo Ricciardone, Mairi Sakellariadou, Archisman Ghosh +52
Over the next two decades, gravitational-wave (GW) observations are expected to evolve from a discovery-driven endeavour into a precision tool for astrophysics, cosmology, and fund…
Bayesian reconstruction of primordial perturbations from induced gravitational waves
Aya Ghaleb, Ameek Malhotra, Gianmassimo Tasinato +1
The formation of primordial black holes or other dark matter relics from amplified density fluctuations in the early universe may also generate scalar-induced gravitational waves (…
Bounded Dark Energy
Giulia Borghetto, Ameek Malhotra, Gianmassimo Tasinato +1
Recent cosmological observations suggest that the dark energy equation of state may have changed in the latter stages of cosmic history. We introduce a quintessence scenario, terme…
Reconstructing Primordial Curvature Perturbations via Scalar-Induced Gravitational Waves with LISA
Jonas El Gammal, Aya Ghaleb, Gabriele Franciolini +17
Many early universe scenarios predict an enhancement of scalar perturbations at scales currently unconstrained by cosmological probes. These perturbations source gravitational wave…
Astrometry meets Pulsar Timing Arrays: Synergies for Gravitational Wave Detection
N. M. Jiménez Cruz, Ameek Malhotra, Gianmassimo Tasinato +1
High-precision astrometry offers a promising approach to detect low-frequency gravitational waves, complementing pulsar timing array (PTA) observations. We explore the response of…
Stückelberg path to pure de Sitter supergravity
Sukŗti Bansal, Silvia Nagy, Antonio Padilla +1
We advance the study of pure de Sitter supergravity by introducing a finite formulation of unimodular supergravity via the super-Stückelberg mechanism. Building on previous works,…
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…
Measuring the circular polarization of gravitational waves with pulsar timing arrays
N. M. Jiménez Cruz, Ameek Malhotra, Gianmassimo Tasinato +1
The circular polarization of the stochastic gravitational wave background (SGWB) is a key observable for characterising the origin of the signal detected by Pulsar Timing Array (PT…
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…
Measuring kinematic anisotropies with pulsar timing arrays
N. M. Jiménez Cruz, Ameek Malhotra, Gianmassimo Tasinato +1
Recent Pulsar Timing Array (PTA) collaborations show strong evidence for a stochastic gravitational wave background (SGWB) with the characteristic Hellings-Downs inter-pulsar corre…