3 papers
hep-th2026
Stochastic inflation from a non-equilibrium renormalization group
Sebastián Céspedes, Thomas Colas
Understanding stochastic inflation, and in particular the systematic computation of controlled corrections from first principles, remains an important open problem. In this work, w…
astro-ph.CO2026
Scale-Dependent Loop Corrections to the Inflationary Power Spectrum
Matteo Braglia, Sebastián Céspedes, Lucas Pinol
Loop corrections to primordial correlation functions are unavoidable due to the non-linear nature of gravity. Previous works have established a robust framework for computing the r…
hep-th2025
Causality Bounds on the Primordial Power Spectrum
Mariana Carrillo González, Sebastián Céspedes
Effective field theories (EFTs) parametrize our ignorance of the underlying UV theory through their Wilson coefficients. However, not all values of these coefficients are consisten…