15 citations · 25 across the 4 of their papers we have counts for
4 papers
A simple proof of a conjecture on univariate polynomials and their roots
P. Ullrich
This paper has been withdrawn by the author due to an error in the main proof (thanks to Carlos D'Andrea)
On the problem of mass-dependence of the two-point function of the real scalar free massive field on the light cone
P. Ullrich, E. Werner
We investigate the generally assumed inconsistency in light cone quantum field theory that the restriction of a massive, real, scalar, free field to the nullplane …
Uniqueness in the Characteristic Cauchy Problem of the Klein-Gordon Equation and Tame Restrictions of Generalized Functions
Peter Ullrich
We show that every tempered distribution, which is a solution of the (homogenous) Klein-Gordon equation, admits a ``tame'' restriction to the characteristic (hyper)surface $\{x^0+x…
The Continuum Version of ϕ^4_{1+1}-theory in Light-Front Quantization
Pierre Grangé, Peter Ullrich, Ernst Werner
A genuine continuum treatment of the massive ϕ^4_{1+1}-theory in light-cone quantization is proposed. Fields are treated as operator valued distributions thereby leading to a mathe…