9 papers
Distance-Higuchi Bounds on Inflationary Field Ranges and Lifetimes
Luis A. Anchordoqui, Ignatios Antoniadis, Alek Bedroya
We show that quasi-de Sitter inflation driven by a nearly flat scalar potential has a finite polynomial lifespan dictated by the interplay between the swampland Distance Conjecture…
IR Black Hole Instabilities Trigger Species-Scale Particle Production
Luis A. Anchordoqui, Alek Bedroya, Dieter Lüst +1
We propose a novel UV-IR mechanism in quantum gravity in which black hole instabilities act as a bridge to the most ultraviolet sector of the theory. Specifically, we argue that wh…
Evolving Dark Sector and the Dark Dimension Scenario
Alek Bedroya, Georges Obied, Cumrun Vafa +1
String theory naturally leads to the expectation that dark energy is not stable, and may be evolving as captured by the Swampland de Sitter conjectures. Moreover, motivated by the…
Holographic Constraints on the String Landscape
Alek Bedroya, Paul J. Steinhardt
We show that holography imposes strong and general constraints on scalar field potentials in the string landscape, determined by the asymptotic structure of the underlying spacetim…
Holography vs. Scale Separation
Alek Bedroya, Paul J. Steinhardt
In this work, we point out a contradiction between holography and scale-separated AdS (i.e. parametrically large mass gap) in string theory, making the standard assumption that the…
String stars in
Alek Bedroya, David Wu
We raise a thermodynamic puzzle for Horowitz--Polchinski (HP) solutions in the presence of extra compact dimensions and show that it can be resolved by the existence of higher-dime…