38 citations · 164 across the 13 of their papers we have counts for
13 papers
How Low Can We Go? Minimum Spectroscopic Requirements For Supernova Subtype Classification
Willow Fox Fortino, Federica B. Bianco, Maryam Modjaz +2
Millions of supernovae will be discovered with the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). As a result, spectrographs around the world will have to make d…
Primordial Black Holes and Second-order Gravitational Waves in Axion-like Hybrid Inflation
Waqas Ahmed, Anish Ghoshal, Umer Zubair
We investigate the possibility that primordial black holes (PBHs) can be formed from large curvature perturbations generated during the waterfall phase transition in a hybrid infla…
Inflation, Proton Decay and Gravitational Waves from Metastable Strings in Model
Waqas Ahmed, Maria Mehmood, Mansoor Ur Rehman +1
We present a realistic supersymmetric -hybrid inflation model within the framework of gauge symmetry, wherein the symmetry breaking $SU(4)…
Smooth -Hybrid and Non-Minimal Higgs Inflation in With Observable Gravitational Waves
Umer Zubair
We propose to study a smooth variant of the -hybrid inflation model and a non-minimal Higgs model of inflation with quartic non-minimal coupling between the Higgs field and grav…
Probing Stochastic Gravitational Wave Background from Strings in Light of NANOGrav 15-Year Data
Waqas Ahmed, Mansoor Ur Rehman, Umer Zubair
A realistic model of , embedded in supersymmetric grand unified theory, is investigated for the emergence of a metastable cosmic string network. This…
LHC Run-3, Yukawa Unification and Dark Matter Implications in SUSY 4-2-2 model
Waqas Ahmed, Mohamed Belfkir, Salah Nasri +2
We revisit the bottom and Yukawa coupling unification in supersymmetric -- model and present for the first time the sbottom-neutralino co-annihilation scenario consist…
Radiative Symmetry breaking, Cosmic Strings and Observable Gravity Waves in symmetric
Waqas Ahmed, Umer Zubair
We implement shifted hybrid inflation in the framework of supersymmetric GUT model which provides a natural solution to the monopole problem appearing in the…
Observable r, Gravitino Dark Matter, and Non-thermal Leptogenesis in No-Scale Supergravity
Waqas Ahmed, Muhammad Moosa, Shoaib Munir +1
We analyse the shifted hybrid inflation in a no-scale SU(5) model with supersymmetry, which naturally circumvents the monopole problem. The no-scale framework is derivable as the e…
Constraining the Cosmic Strings Gravitational Wave Spectra in No Scale Inflation with Viable Gravitino Dark matter and Non Thermal Leptogenesis
Waqas Ahmed, M. Junaid, Salah Nasri +1
We revisit the hybrid inflation model gauged by extension of the Minimal Supersymmetric Standard Model (MSSM) in a no-scale background. Considering a single predictive…
Smooth Hybrid Inflation with Low Reheat Temperature and Observable Gravity Waves in Super-GUT
Waqas Ahmed, Athanasios Karozas, George K. Leontaris +1
We realize smooth hybrid inflation in the framework of supersymmetric model which provides a natural solution to the monopole problem appearing…
Primordial Black Holes and Gravitational Waves in Hybrid Inflation with Chaotic Potentials
Waqas Ahmed, M. Junaid, Umer Zubair
We study the formation of primordial black hole (PBH) dark matter and the generation of scalar induced secondary gravitational waves (SIGWs) in a non-supersymmetric model of hybrid…
Gravity Waves and Proton Decay in Flipped SU(5) Hybrid Inflation Model
Mansoor Ur Rehman, Qaisar Shafi, Umer Zubair
We revisit supersymmetric hybrid inflation in the context of flipped model. With minimal superpotential and minimal Kähler potential, and soft SUSY masses of order $(1 - 10…
Simplified Smooth Hybrid Inflation in Supersymmetric SU(5)
Mansoor Ur Rehman, Umer Zubair
A scheme of simplified smooth hybrid inflation is realized in the framework of supersymmetric . The smooth model of hybrid inflation provides a natural solution to the monop…