1 citations · 1 across the 5 of their papers we have counts for
13 papers
Decoherence Effects on Primordial Black Holes and Scalar-Induced Gravitational Waves
Waqas Ahmed
Primordial black holes (PBHs) form when large primordial curvature perturbations re-enter the Hubble radius and exceed the classical collapse threshold. These perturbations origina…
Probing Two Dark Dimensions through Primordial Black Holes, Gravitational Waves, and Colliders
Waqas Ahmed, George K. Leontaris
We study primordial-black-hole (PBH) dark matter in the two-dark-dimensions (2DD) framework, a six-dimensional brane-world scenario with two compact extra dimensions and a fundamen…
Entanglement, Discord, and Residual Coherence in Scalar-Induced Gravitational Waves
Waqas Ahmed
Scalar-induced gravitational waves are usually modeled as a classical stochastic background sourced by primordial curvature perturbations. We investigate whether residual quantum-i…
Quantum Memory in Scalar-Induced Gravitational Waves
Waqas Ahmed
Scalar-induced gravitational waves are usually treated as a classical stochastic background sourced by phase-random curvature perturbations. We show that this description can miss…
GUT-Scale Smooth Hybrid Inflation with a Stabilized Modulus in Light of ACT and SPT Data
Waqas Ahmed, Constantinos Pallis, Mansoor Ur Rehman
We analyze a generalized framework of smooth F-term hybrid inflation (smFHI) consistent with gauge coupling unification within the Minimal Supersymmetric Standard Model (MSSM). The…
Secondary Gravitational Wave Signatures from 5D Rotating Primordial Black Holes in the Dark Dimension
Waqas Ahmed, George K. Leontaris
We investigate five-dimensional rotating primordial black holes (PBHs) as dark matter candidates within the Dark Dimension (DD) scenario motivated by the Swampland Program. In this…