7 citations · 26 across the 10 of their papers we have counts for
10 papers
On the Perturbative Quantization of Einstein-Hilbert Gravity Embedded in a Higher Derivative Model II
Steffen Pottel, Klaus Sibold
In a previous paper we presented the renormalization of Einstein-Hilbert gravity under inclusion of higher derivative terms and proposed a projection down to the physical state spa…
On the Perturbative Quantization of Einstein-Hilbert Gravity Embedded in a Higher Derivative Model
Steffen Pottel, Klaus Sibold
In a perturbative approach Einstein-Hilbert gravity is quantized about a flat background. In order to render the model power counting renormalizable, higher order curvature terms a…
Scheduling activities with time-dependent durations and resource consumptions
Steffen Pottel, Asvin Goel
In this paper we study time-dependent scheduling problems where activities consume a resource with limited availability. Activity durations as well as resource consumptions are ass…
Lower bounds on mixing norms for the advection diffusion equation in
Camilla Nobili, Steffen Pottel
An algebraic lower bound on the energy decay for solutions of the advection-diffusion equation in with is derived using the Fourier splitting method. Motivat…
BPHZ Renormalization in Configuration Space for the -Model
Steffen Pottel
Recent developments for BPHZ renormalization performed in configuration space are reviewed and applied to the model of a scalar quantum field with quartic self-interaction. An exte…
Normal Products and Zimmermann Identities in Configuration Space BPHZ Renormalization
Steffen Pottel
The notion of normal products, a generalization of Wick products, is derived with respect to BPHZ renormalization formulated entirely in configuration space. Inserted into time-ord…
Configuration Space BPHZ Renormalization on Analytic Spacetimes
Steffen Pottel
A configuration space version of BPHZ renormalization is proved in the realm of perturbative algebraic quantum field theory. All arguments are formulated entirely in configuration…
A BPHZ Theorem in Configuration Space
Steffen Pottel
The concept of BPHZ renormalization is translated into configuration space. After deriving the counterpart for the regularizing Taylor subtraction, a new version of Zimmermann's co…
Conjugate variables in quantum field theory and a refinement of Paulis theorem
Steffen Pottel, Klaus Sibold
For the case of spin zero we construct conjugate pairs of operators on Fock space. On states multiplied by polarization vectors coordinate operators Q conjugate to the momentum ope…
Conformal transformations of the S-matrix; -function identifies change of spacetime
S. Pottel, K. Sibold
First conformal transformations of the -matrix are derived in massless -theory. Then it is shown that the anomalous transformations can be rewritten as a symmetry once one…