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math.FA2025
Wetterich's Equation and its Boundary Conditions for Radon Measures on Locally Convex Spaces
Jobst Ziebell
Wetterich's equation and corresponding flows of effective average actions are used frequently in theoretical physics to study the properties of quantum field theories. Under approp…
math.FA2025
Tikhonov Well-Posedness and Differentiability on Asymmetrically Normed Spaces
Jan Fischer, Jobst Ziebell
On normed vector spaces there is a well-known connection between the Tikhonov well-posedness of a minimisation problem and the differentiability of an associated convex conjugate f…
hep-th2025
Existence theorem on the UV limit of Wilsonian RG flows of Feynman measures
Andras Laszlo, Zsigmond Tarcsay, Jobst Ziebell
In nonperturbative formulation of Euclidean signature quantum field theory (QFT), the vacuum state is characterized by the Wilsonian renormalization group (RG) flow of Feynman meas…