212 citations · 2.3k across the 67 of their papers we have counts for
67 papers
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)…
Probing the Supersymmetry-Mass Scale With F-term Hybrid Inflation
G. Lazarides, C. Pallis
We consider F-term hybrid inflation and supersymmetry breaking in the context of a model which largely respects a global U(1) R symmetry. The Kaehler potential parameterizes the Ka…
Inflation, superheavy metastable strings and gravitational waves in non-supersymmetric flipped SU(5)
George Lazarides, Rinku Maji, Ahmad Moursy +1
Motivated by the NANOGrav 15 year data and other recent investigations of stochastic gravitational background radiation based on pulsar timing arrays, we show how superheavy string…
Superheavy quasi-stable strings and walls bounded by strings in the light of NANOGrav 15 year data
George Lazarides, Rinku Maji, Qaisar Shafi
Composite topological structures such as superheavy "quasi-stable strings" (QSS) and "walls bounded by strings" (WBS) arise in realistic extensions of the Standard Model of high en…
Composite Topological Structures in SO(10)
George Lazarides, Qaisar Shafi, Amit Tiwari
We explore a variety of composite topological structures that arise from the spontaneous breaking of to via one of its maximal subgroups $SU(5)…
A Predictive Model
George Lazarides, Rinku Maji, Rishav Roshan +1
We discuss some testable predictions of a non-supersymmetric model supplemented by a Peccei-Quinn symmetry. We utilize a symmetry breaking pattern of that yields…