165 citations · 311 across the 8 of their papers we have counts for
4 papers · 1 filter
Spatially asymptotic S-matrix from general boundary formulation
Daniele Colosi, Robert Oeckl
We construct a new type of S-matrix in quantum field theory using the general boundary formulation. In contrast to the usual S-matrix the space of free asymptotic states is located…
S-matrix at spatial infinity
Daniele Colosi, Robert Oeckl
We provide a new method to construct the S-matrix in quantum field theory. This method implements crossing symmetry manifestly by erasing the a priori distinction between in- and o…
States on timelike hypersurfaces in quantum field theory
Robert Oeckl
We investigate the possibility of defining states on timelike hypersurfaces in quantum field theory. To this end we consider hyperplanes in the real massive Klein-Gordon theory usi…
A "general boundary" formulation for quantum mechanics and quantum gravity
Robert Oeckl
I propose to formalize quantum theories as topological quantum field theories in a generalized sense, associating state spaces with boundaries of arbitrary (and possibly finite) re…