3 papers
gr-qc2026
C-infinity Compact-Support Wormholes with Exact Schwarzschild Exterior in Trace-Coupled Gravity
Mushtaq Ahmad, M. Farasat Shamir, Ahdab K. Althukair
We study static, spherically symmetric traversable wormholes in trace-coupled gravity with action density f(R,T) = R + lambda T^2. The spacetime is built from C-infinity deformatio…
gr-qc2026
Odd-parity perturbations of trace-quadratic black holes with anisotropic matter: admissible branches, axial ringdown, and a coupled-PINN benchmark
Mushtaq Ahmad, M. Farasat Shamir, Adnan Malik +1
We study odd-parity gravitational perturbations of static black holes in trace-quadratic gravity supported by an anisotropic effective fluid with constant closure p…
gr-qc2026
A cosmology-to-ringdown EFT consistency map for scalar-tensor gravity
Mushtaq Ahmad, M. Farasat Shamir
We construct an effective-field-theory bridge from late-time scalar-tensor cosmology to black-hole ringdown observables. Starting from a cosmology-conditioned EFT posterior, we lif…