Tag: general relativity

A new theoretical study shows that an almost eta-Ricci–Yamabe geometric flow, coupled to an imperfect fluid in a dark-energy regime, ...

Researchers have derived fully analytic waveform derivatives for parametrized post-Einsteinian gravitational-wave tests, cutting Fisher-matrix computation costs dramatically and mapping how ...

A new exact solution of the Klein–Gordon equation in a Kiselev black hole spacetime shows that dark energy suppresses Hawking ...

A new theoretical analysis maps the coupled gravitational and electromagnetic vibrations of a singularity-free, magnetically charged black hole, revealing parity ...

A new exact solution of the Einstein field equations shows that a Schwarzschild black hole embedded in a dark matter ...

Theorists have explained why a universe filled with exotic phantom energy oscillates in volume instead of crashing into a singularity, ...

New calculations show that boson stars combining ground-state and excited-state scalar fields undergo a sudden sign flip in their tidal ...

Physicists have derived two new exact static axisymmetric solutions of Entangled Relativity, a non-linear reformulation of general relativity in which ...

A new theoretical analysis derives the precise junction conditions for gluing two different f(R) gravity theories across a shared boundary, ...

A new study calculates how mass-energy across the entire universe cumulatively dilates time on Earth, finding the effect converges in ...