Alternatives to Schwarzschild in the weak field limit of General Relativity

Understand

The metric outside an isolated object made up of ordinary matter is bound to be the classical Schwarzschild vacuum solution of General Relativity.

• Nevertheless, some solutions are known (e.g.
• Morris-Thorne wormholes) that do not match Schwarzschild asymptotically.
• On a phenomenological point of view, gravitational lensing in metrics falling as $1/r^q$ has recently attracted great interest.