Freiburg 2008 – wissenschaftliches Programm
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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik
MP 6: Quantenfeldtheorie
MP 6.3: Vortrag
Mittwoch, 5. März 2008, 17:40–18:00, KGI-HS 1023
Conformal correlation functions in four dimensions: new insights — •Karl-Henning Rehren1, Nikolay M. Nikolov2, and Ivan Todorov2 — 1Institut für Theoretische Physik, Univ. Göttingen — 2INRNE, Sofia, Bulgarien
It is well known that conformal correlation functions are essentially functions of the conformal cross ratios, with some constraints on their singularity structure. Otherwise, little is known about these functions. Assuming Huygens' principle, a much stronger restriction is established which can be cast into the form of a universal third order differential equation for the most singular terms. Nontrivial solutions can occur only at more than five point correlations. A nontrivial six-point solution is presented and discussed.