513 citations · 5.8k across the 103 of their papers we have counts for
107 papers
Spectator Axions in String Inflation and Primordial Black Holes
Michele Cicoli, Dario L. Lorenzoni, Evan McDonough +1
We study the impact of light spectator axions on the seeding of primordial black holes (PBHs) during inflation in string theory. Primordial black holes exhibit unique and novel phe…
Gravitational Waves from Multiple Cosmic Superstrings and the Overshoot Problem
Luca Brunelli, Michele Cicoli, Muhammad Hassan +2
Post inflationary string cosmology can feature an initial population of multiple species of cosmic superstrings whose tension is controlled by a modulus rolling over a steep potent…
Flux Vacua Near the Boundary of Large Complex Structure
Aman Chauhan, Michele Cicoli, Anshuman Maharana +1
Three-form fluxes generate a potential for the complex structure moduli in type IIB string compactifications on Calabi-Yau threefolds. In the large complex structure patch, the pot…
New Type IIB Poly-instanton Effects and Axion Quintessence
Luca Caraffi, Federico Carta, Michele Cicoli
Previous studies of poly-instantons in type IIB Calabi-Yau orientifolds found that these effects arise when Euclidean D3-branes wrap rigid cycles with a Wilson line. In this work,…
Moduli Stabilisation for ADD and the Dark Dimension Scenario
Andreas P. Braun, Michele Cicoli, Riccardo Milioli +1
We provide a moduli stabilisation mechanism for realising anisotropic string compactifications with one or two large extra dimensions, corresponding to the ADD and Dark Dimension s…
Recent progress on inflation and dark energy from string theory
Michele Cicoli
We review recent progress in string model building in both early and late time cosmology. We describe the main theoretical and phenomenological features of an entire class of infla…