1 citations · 4 across the 8 of their papers we have counts for
9 papers
Complex Worldline Instantons in (Anti-)de Sitter Space
Alberto Castellano, Jinwei Chu, Eliseu Kloster +1
We study complex saddle points of the worldline path integral for massive charged particles in two-dimensional maximally symmetric backgrounds threaded by homogeneous electric fiel…
How to (Non-)Perturb a BPS Black Hole
Alberto Castellano, Matteo Zatti
We relate the structure of non-perturbative corrections to BPS black hole observables in flat-spacetime theories with certain properties of probe charged particles in the near-hori…
Exact Path Integral Methods in Supersymmetric Backgrounds
Alberto Castellano, Carmine Montella, Matteo Zatti
We determine the exact functional determinants of charged, massive spin-0 and spin- particles in backgrounds threaded by constant electri…
Curvature divergences and gravity decoupling in Calabi--Yau rigid limits
Alberto Castellano, Fernando Marchesano, Lorenzo Paoloni
Four-dimensional supergravity theories become rigid in gravity-decoupling limits. We study this effect for type II string compactifications on general Calabi--Yau m…
On Supersymmetric D-brane probes in 4d Attractors
Alberto Castellano, Carmine Montella, Matteo Zatti
We extend the -symmetry analysis of supersymmetric D-brane probes in the attractor geometry, originally performed by Simons, Strominger, Tho…
The Double EFT Expansion in Quantum Gravity
José Calderón-Infante, Alberto Castellano, Alvaro Herráez
In this work, we aim to characterize the structure of higher-derivative corrections within low-energy Effective Field Theories (EFTs) arising from a UV-complete theory of quantum g…
The Moduli Space Curvature and the Weak Gravity Conjecture
Alberto Castellano, Fernando Marchesano, Luca Melotti +1
We unveil a remarkable interplay between rigid field theories (RFTs), charge-to-mass ratios and scalar curvature divergences in the vector multiplet modu…
Stringy Evidence for a Universal Pattern at Infinite Distance
Alberto Castellano, Ignacio Ruiz, Irene Valenzuela
Infinite distance limits in the moduli space of a quantum gravity theory are characterized by having infinite towers of states becoming light, as dictated by the Distance Conjectur…
A Universal Pattern in Quantum Gravity at Infinite Distance
Alberto Castellano, Ignacio Ruiz, Irene Valenzuela
Quantum gravitational effects become significant at a cut-off species scale that can be much lower than the Planck scale whenever we get a parametrically large number of fields bec…