Publications (4)
Dissociative recombination measurements of NH using an ion storage ring
O. Novotný, M. Berg, D. Bing +12
We have investigated dissociative recombination (DR) of NH with electrons using a merged beams configuration at the TSR heavy-ion storage ring located at the Max Planck Institu…
The Pin Groups in Physics: C, P, and T
M. Berg, C. DeWitt-Morette, S. Gwo +1
We review the role in physics of the Pin groups, double covers of the full Lorentz group. Pin(1,3) is to O(1,3) what Spin(1,3) is to SO(1,3). The existence of two Pin groups offers…
Effective Action of Matter Fields in Four-Dimensional String Orientifolds
P. Bain, M. Berg
We study various aspects of the Kahler metric for matter fields in N=1,2 orientifold compactifications of type IIB string theory. The result has an infrared-divergent part which re…
Representations of the Renormalization Group as Matrix Lie Algebra
M. Berg, P. Cartier
Renormalization is cast in the form of a Lie algebra of infinite triangular matrices. By exponentiation, these matrices generate counterterms for Feynman diagrams with subdivergenc…