Probleme der speziellen Relativitätstheorie

Zeitschrift für Physik A Hadrons and nuclei -     

On the Epstein zeta function

In this paper we give an elementary proof on the range of convergence of Epstein zeta functions.     

The Feynman integrand for the perturbed harmonic oscillator as a Hida distribution

We review some basic notions and results of White Noise Analysis that are used in the construction of the Feynman integrand as a generalized White Noise functional. We show that the Feynman integrand for the harmonic oscillator in an external potential is a Hida distribution.     

Koecher-maaß-series for modular forms of quaternions

In this paper we demonstrate the meromorphic continuation and functional equation for Koecher-Maaß-series attached to modular forms of quaternions. The Koecher-Maaß-series associated with modular forms in the Maaß space, which are simultaneous eigenforms under all Hecke operators, possess Euler product expansions.