85 citations · 318 across the 8 of their papers we have counts for
8 papers
Mass Hierarchies and Dynamical Field Range
Aitor Landete, Gary Shiu
Several swampland conjectures suggest that there is a critical field range beyond which the effective field theory (EFT) description breaks down in quantum gravity. In applications…
Flux Flattening in Axion Monodromy Inflation
Aitor Landete, Fernando Marchesano, Gary Shiu +1
String theory models of axion monodromy inflation exhibit scalar potentials which are quadratic for small values of the inflaton field and evolve to a more complicated function for…
Challenges for D-brane large-field inflation with stabilizer fields
Aitor Landete, Fernando Marchesano, Clemens Wieck
We study possible string theory compactifications which, in the low-energy limit, describe chaotic inflation with a stabilizer field. We first analyze type IIA setups where the inf…
D6-branes and axion monodromy inflation
Dagoberto Escobar, Aitor Landete, Fernando Marchesano +1
We develop new scenarios of large field inflation in type IIA string compactifications in which the key ingredient is a D6-brane that creates a potential for a B-field axion. The p…
Large field inflation from D-branes
Dagoberto Escobar, Aitor Landete, Fernando Marchesano +1
We propose new large field inflation scenarios built on the framework of F-term axion monodromy. Our setup is based on string compactifications where D-branes create potentials for…
Electric-magnetic duality and renormalization in curved spacetimes
Ivan Agullo, Aitor Landete, Jose Navarro-Salas
We point out that the duality symmetry of free electromagnetism does not hold in the quantum theory if an arbitrary classical gravitational background is present. The symmetry brea…
Adiabatic regularization and particle creation for spin one-half fields
Aitor Landete, Jose Navarro-Salas, Francisco Torrenti
The extension of the adiabatic regularization method to spin- fields requires a self-consistent adiabatic expansion of the field modes. We provide here the details of such exp…
Adiabatic regularization for spin-1/2 fields
Aitor Landete, Jose Navarro-Salas, Francisco Torrenti
We extend the adiabatic regularization method to spin-1/2 fields. The ansatz for the adiabatic expansion for fermionic modes differs significantly from the WKB-type template that w…