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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
Periodic Timelike Motion and Gravitational Wave Signatures around a Magnetically Charged Black Hole Surrounded by Quintessence
R. H. Ali
We investigate timelike geodesics and gravitational wave signatures of periodic motion around a static magnetically charged black hole arising from nonlinear electrodynamics and im…
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…