Are General Relativity and Teleparallel Gravity Theoretically Equivalent?

Understand

Teleparallel gravity shares many qualitative features with general relativity, but differs from it in the following way: whereas in general relativity, gravitation is a manifestation of space-time curvature, in teleparallel gravity, spacetime is (always) flat.

• Gravitational effects in this theory arise due to spacetime torsion.
• It is often claimed that teleparallel gravity is an equivalent reformulation of general relativity.
• In this paper we question that view.