359 citations · 955 across the 29 of their papers we have counts for
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Exact bispectra in strongly mixed multifield inflation
Lucas Pinol
Using the effective field theory of inflationary fluctuations extended by a massive isocurvature scalar, at unit sound speed, we compute the primordial bispectra generated by every…
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…
New exact bispectrum shapes in multifield inflation
Lucas Pinol
Using the effective field theory of multiple inflationary fluctuations, we present the first analytical calculation of the primordial bispectrum in which the quadratic mixing betwe…
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…