From the 2 of 7 linked papers with an AI index.
7 papers
Spectator Axions in String Inflation and Primordial Black Holes
Michele Cicoli, Dario L. Lorenzoni, Evan McDonough +1
The paper examines how light spectator axions during Fibre Inflation in string theory influence the generation of primordial black holes, showing that axions with moderately large…
Gravitational Waves from Multiple Cosmic Superstrings and the Overshoot Problem
Luca Brunelli, Michele Cicoli, Muhammad Hassan +2
The paper analyzes how multiple species of cosmic superstrings in post‑inflationary string cosmology avoid the overshoot problem via friction from a gravitational‑wave radiation ba…
Dynamics of Cosmic Superstrings and the Overshoot Problem
Luca Brunelli, Michele Cicoli, Francisco Gil Pedro
We exploit the techniques of dynamical systems to study the cosmological evolution of cosmic fundamental strings and effective strings arising from branes wrapped on internal cycle…
The COSMIC WISPers White Paper: The physics case for Weakly Interacting Slim Particles
Ariel Arza, Deniz Aybas, Shyam Balaji +124
Axions and other very weakly interacting slim particles (WISPs), with masses below 1 GeV, arise naturally in many extensions of the Standard Model of particle physics. In particula…
Growth of Cosmic Strings beyond Kination
Luca Brunelli, Michele Cicoli, Francisco G. Pedro
A novel mechanism for the production of a cosmic network of fundamental superstrings based on a time-varying string tension has been recently proposed in the context of a kinating…
Relaxation of first-class constraints and the quantization of gauge theories: from "matter without matter" to the reappearance of time in quantum gravity
Roberto Casadio, Leonardo Chataignier, Alexander Yu. Kamenshchik +3
We make a conceptual overview of a particular approach to the initial-value problem in canonical gauge theories. We stress how the first-class phase-space constraints may be relaxe…