162 citations · 1.2k across the 52 of their papers we have counts for
6 papers · 1 filter
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…
Kinetic Mixing, Proton Decay and Gravitational Waves in SO(10)
Rinku Maji, Qaisar Shafi
We present an model in which a dimension five operator induces kinetic mixing at the GUT scale between the abelian subgroups and . We discuss in this…
Topological structures, dark matter and gravitational waves in
Rinku Maji, Qaisar Shafi, Amit Tiwari
We discuss the appearance of topological structures from the spontaneous breaking of to the Standard Model via its maximal subgroup . They include dumbb…
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…
Muon g-2 and lepton flavor violation in supersymmetric GUTs
Mario E. Gomez, Smaragda Lola, Qaisar Shafi +1
We present a class of supersymmetric (SUSY) GUT models that can explain the apparent discrepancy between the SM predictions and experimental values of muon g-2 while providing test…
Quantum tunneling in the early universe: Stable magnetic monopoles from metastable cosmic strings
George Lazarides, Rinku Maji, Qaisar Shafi
We present a novel mechanism for producing topologically stable monopoles (TSMs) from the quantum mechanical decay of metastable cosmic strings in the early universe. In an $SO(10)…