Mauricio Gamonal

activity

20242026

collaborators

5 papers

gr-qc2026

Toller matrices and the Feynman $i ε$ in spinfoams

Eugenio Bianchi, Chaosong Chen, Mauricio Gamonal

We study the analytic properties and three equivalent representations of the Toller matrices $T^{(\pm)}$ which appear in the causal formulation of spinfoam transition amplitudes fo…

gr-qc2026

Causal spinfoam vertex for 4d Lorentzian quantum gravity

Eugenio Bianchi, Chaosong Chen, Mauricio Gamonal

We introduce a new causal spinfoam vertex for $4$ d Lorentzian quantum gravity. The causal data are encoded in Toller $T$ -matrices, which add to Wigner $D$ -matrices $T^{(+)}+T^{(-)}…

gr-qc2025

Precision predictions of Starobinsky inflation with self-consistent Weyl-squared corrections

Eugenio Bianchi, Mauricio Gamonal

Starobinsky's $R + I^\pm R^{2}$ inflation provides a compelling one-parameter inflationary model that is supported by current cosmological observations. However, at the same order in space…

gr-qc2025

Squeezed vacua and primordial features in effective theories of inflation at N2LO

Eugenio Bianchi, Mauricio Gamonal

A finite duration of cosmic inflation can result in features $P_{R} (k) = ∣ I^\pm_{k} - I^_{k}^{2} e^{i I^´_{k}} ∣^{2} P_{R}^{(0)} (k)$ in the…

gr-qc2024

Primordial power spectrum at N3LO in effective theories of inflation

Eugenio Bianchi, Mauricio Gamonal

We develop a systematic framework to compute the primordial power spectrum up to next-to-next-to-next to leading order (N3LO) in the Hubble-flow parameters for a large class of eff…

Toller matrices and the Feynman iε in spinfoams

Causal spinfoam vertex for 4d Lorentzian quantum gravity

Precision predictions of Starobinsky inflation with self-consistent Weyl-squared corrections

Squeezed vacua and primordial features in effective theories of inflation at N2LO

Primordial power spectrum at N3LO in effective theories of inflation

Toller matrices and the Feynman $i ε$ in spinfoams