Spacecone quantization of AdS superparticle

TL;DR

This paper presents a novel quantization method for the superparticle in AdS_5xS^5, revealing new insights into boundary representations and propagators in the context of supergravity and string theory.

Contribution

It introduces a spacecone quantization approach for the superparticle, connecting bulk AdS space to boundary superspace representations.

Findings

Reproduces known field-strength propagator

Establishes boundary PSU(2,2|4) representation

Provides a new quantization framework for superparticles

Abstract

We first-quantize the superparticle describing free 10D IIB supergravity on AdS_5xS^5. We choose the worldline coordinate to be a combination of the bulk (spatial) coordinates of anti de Sitter space and the sphere. The Hamiltonian is independent of this "time" and the fermions. On the boundary, the representation of PSU(2,2|4) becomes that of projective superspace. The prepotential propagator reproduces the known field-strength one.