170 citations · 439 across the 19 of their papers we have counts for
4 papers · 1 filter
Open Effective Field Theory and the Physics of Cosmological Collider Signals
Thomas Colas, Zhehan Qin, Xi Tong
We examine the origin of the cosmological collider signal using the framework of open effective field theories. Focusing on the single exchange of a massive scalar field, we demons…
Lectures on Open Effective Field Theories
Thomas Colas
Effective field theories offer a powerful method to unify diverse models under a small set of control parameters, allowing systematic expansions around well-established theories. T…
Quantum estimation of cosmological parameters
Michał Piotrak, Thomas Colas, Ana Alonso-Serrano +1
Understanding how well future cosmological experiments can reconstruct the mechanism that generated primordial inhomogeneities is key to assessing the extent to which cosmology can…
An Open System Approach to Gravity
Santiago Agüí Salcedo, Thomas Colas, Lennard Dufner +1
Several major open problems in cosmology, including the nature of inflation, dark matter, and dark energy, share a common structure: they involve spacetime-filling media with unkno…