Stanford EE

Massive Particles at Spatial Infinity

Suvrat Raju (ICTS)
Varian 355

Abstract: In asymptotically flat space, the principle of holography of information states that, in a theory of quantum gravity, all operators on future (past) null infinity can be represented near its past (future) boundary. However, massive fields do not have a good limit as one approaches null infinity. In this talk, we will discuss a novel asymptotic limit of massive fields at the blowup of spatial infinity that leads to a well-defined algebra of boundary operators. We will show how the extrapolation-procedure must be improved in the presence of interactions and describe the relationship between the algebra at spatial infinity and the standard "in" and "out" algebra. We will briefly discuss a conjecture for how holography of information might be generalized to incorporate massive fields.