2020/04/28 by Daniel Junghans · 3 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Quantum Chromodynamics and Particle Interactions #Cosmology and Gravitation Theories
paper · doi:10.1002/prop.202000040
Abstract We construct AdS 4 flux vacua of type IIA string theory in the supergravity (large volume, small ) regime, including the backreaction of O6‐planes. Our solutions are the localized versions of the smeared solutions on Calabi‐Yau orientifolds studied by DeWolfe, Giryavets, Kachru and Taylor and in other works. We find that the O‐plane backreaction in these solutions generates warping, a varying dilaton, non‐closed RR field strengths and internal curvature. Just like their smeared counterparts, the localized solutions admit stabilized moduli, a parametric control over string corrections and a parametric separation between the AdS and KK scales. Our explicit expressions furthermore make precise the common lore that smeared solutions should approximate the exact ones in the large‐volume, small‐ limit. Finally, our solutions appear to violate a recent swampland conjecture about an absence of scale separation in supersymmetric AdS vacua. We make a simple observation explaining why this happens in these solutions in contrast to most other AdS solutions in string theory.