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hep-th2008★ 5 cited
Finite field theories and causality
Andreas Aste
A condensed introduction to the basic concepts of causal perturbation theory is given. Causal perturbation theory is a mathematically rigorous approach to renormalization theory, w…
hep-th2007★ 6 cited
Resummation of mass terms in perturbative massless quantum field theory
Andreas Aste
The neutral massless scalar quantum field in four-dimensional space-time is considered, which is subject to a simple bilinear self-interaction. Is is well-known from renormaliz…
hep-th2004★ 9 cited
Holographic entropy bound from gravitational Fock space truncation
Andreas Aste
A simplified derivation of Yurtsever's result, which states that the entropy of a truncated bosonic Fock space is given by a holographic bound when the energy of the Fock states is…