Umer Zubair

activity

20182026

most citedProbing Stochastic Gravitational Wave Background from

S U (5) \times U (1)_{χ}

Strings in Light of NANOGrav 15-Year Data

26 citations · 54 across the 8 of their papers we have counts for

collaborators

Showing 2024Show all

3 papers · 1 filter

astro-ph.CO2024★ 3 cited

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…

hep-ph2024★ 3 cited

Inflation, Proton Decay and Gravitational Waves from Metastable Strings in $S U (4)_{C} \times S U (2)_{L} \times U (1)_{R}$ Model

Waqas Ahmed, Maria Mehmood, Mansoor Ur Rehman +1

We present a realistic supersymmetric $μ$ -hybrid inflation model within the framework of $S U (4)_{C} \times S U (2)_{L} \times U (1)_{R}$ gauge symmetry, wherein the symmetry breaking $SU(4)…

hep-ph2024★ 3 cited

Smooth $μ$ -Hybrid and Non-Minimal Higgs Inflation in $S U (4)_{C} \times S U (2)_{L} \times S U (2)_{R}$ With Observable Gravitational Waves

Umer Zubair

We propose to study a smooth variant of the $μ$ -hybrid inflation model and a non-minimal Higgs model of inflation with quartic non-minimal coupling between the Higgs field and grav…

Primordial Black Holes and Second-order Gravitational Waves in Axion-like Hybrid Inflation

Inflation, Proton Decay and Gravitational Waves from Metastable Strings in SU(4)C​×SU(2)L​×U(1)R​ Model

Smooth μ-Hybrid and Non-Minimal Higgs Inflation in SU(4)C​×SU(2)L​×SU(2)R​ With Observable Gravitational Waves

Inflation, Proton Decay and Gravitational Waves from Metastable Strings in $S U (4)_{C} \times S U (2)_{L} \times U (1)_{R}$ Model

Smooth $μ$ -Hybrid and Non-Minimal Higgs Inflation in $S U (4)_{C} \times S U (2)_{L} \times S U (2)_{R}$ With Observable Gravitational Waves