3 papers
hep-ph2025
Waterfall phase in supersymmetric hybrid inflation
Ahmad Moursy, Qaisar Shafi
We explore a class of realistic supersymmetric hybrid inflation models with a predicted scalar spectral index , which is in good agreement with the recent A…
hep-ph2024
Induced gravitational waves, metastable cosmic strings and primordial black holes in GUTs
Rinku Maji, Ahmad Moursy, Qaisar Shafi
We explore the cosmological and astrophysical implications of a realistic hybrid inflation model based on flipped . The model contains superheavy metastable cosmic strings a…
hep-ph2024
Primordial monopoles, black holes and gravitational waves
Ahmad Moursy, Qaisar Shafi
We show how topologically stable superheavy magnetic monopoles and primordial black holes can be generated at observable levels by the waterfall field in hybrid inflation models ba…