Although General Relativity is the classic example of a physical theory based on differential geometry, the momentum tensor is the only part of the field equation that is not derived from or interpreted with different...
supported by the China NSF via Grants No.11535005 and No.11275077。
In the standard Einstein-Cartan theory,matter fields couple to gravity through the Minimal Coupling Procedure(MCP),and yet leave the theory an ambiguity.Applying MCP to the action or to the equation of motion would le...
In“Wittgenstein and Qualia,”Ned Block presents an inversion argument for qualia.Taking Wittgenstein’s notes as the starting point,Block argues that if we admit the possibility of the“innocuous”inverted spectrum,w...