165 citations · 252 across the 6 of their papers we have counts for
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hep-th2005★ 30 cited
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…
math-ph2005★ 17 cited
Combinatorics of n-point functions via Hopf algebra in quantum field theory
Angela Mestre, Robert Oeckl
We use a coproduct on the time-ordered algebra of field operators to derive simple relations between complete, connected and 1-particle irreducible n-point functions. Compared to t…