3 papers
gr-qc2026
Geodesic Focusing Conditions in Gravity
Chao-Qiang Geng, Chunhui Liu, Ling-Wei Luo +1
We study the geodesic deviation equation in symmetric teleparallel geometry (STG), where the relative acceleration is defined with respect to the STG connection. We analyze the mod…
gr-qc2024
Teleparallel gravity at null infinity
Florian Girelli, Jianhui Qiu, Céline Zwikel
Four-dimensional asymptotically flat spacetimes have been central to recent developments in infrared physics. Gravitational waves reaching the asymptotic boundary reveal an infinit…
gr-qc2024
From the Janis-Newman-Winicour naked singularities to Einstein-Maxwell phantom wormholes
Changjun Gao, Jianhui Qiu
The Janis-Newman-Winicour spacetime corresponds to a static spherically symmetric solution of Einstein equations with the energy momentum tensor of a massless quintessence field. I…