359 citations · 610 across the 21 of their papers we have counts for
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Multi-Stage and Multi-Field Inflation in Random Inflationary Landscapes
Xingang Chen, Lucas Pinol, Zhong-Zhi Xianyu +1
Generic potentials in an inflationary landscape are typically too steep to support a prolonged period of cosmic inflation. Atypical flat regions of the landscape are required to su…
Explicit gauge-invariant variables in multifield inflation beyond linear order and Hamiltonian dynamics
Julien Grain, Hugo Holland, Lucas Pinol
General relativity coupled to multiple scalar fields is a diffeomorphism-invariant constrained system. Consequently, a naive counting of the perturbative degrees of freedom unavoid…
Searching for signatures of inflationary massive fields in DESI Imaging data and Stage-V galaxy surveys
Walter Riquelme, Santiago Avila, Lucas Pinol +2
We investigate the cosmological imprints of massive fields during inflation through primordial non-Gaussianity (PNG). When these fields are sufficiently light, they produce a signa…
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…
Freezing of the renormalized one-loop primordial scalar power spectrum
Matteo Braglia, Lucas Pinol
The predictive power of cosmic inflation hinges on the existence of a conserved quantity at very large scales, called the primordial curvature perturbation, which is therefore inse…
One-loop renormalization of the effective field theory of inflationary fluctuations from gravitational interactions
Matteo Braglia, Lucas Pinol
We dig into the semi-classical description of gravity by studying one-loop corrections to primordial power spectra generated during cosmic inflation from gravitational nonlinear in…