69 citations · 192 across the 9 of their papers we have counts for
3 papers · 1 filter
On small Dirac Neutrino Masses in String Theory
Gonzalo F. Casas, Luis E. Ibáñez, Fernando Marchesano
We study how tiny Dirac neutrino masses consistent with experimental constraints can arise in string theory SM-like vacua. We use as a laboratory 4d type IIA Calabi--Y…
Modular Invariant Starobinsky Inflation and the Species Scale
Gonzalo F. Casas, Luis E. Ibáñez
Potentials in cosmological inflation often involve scalars with trans-Planckian ranges. As a result, towers of states become massless and their presence pushes the fundamental scal…
Yukawa Couplings at Infinite Distance and Swampland Towers in Chiral Theories
Gonzalo F. Casas, Luis E. Ibáñez, Fernando Marchesano
We study limits of vanishing Yukawa couplings of 4d chiral matter fields in Quantum Gravity, using as a laboratory type IIA orientifolds with D6-branes. In these theories chiral fe…