"Noncommutative field theories, CPT, tachyons and all that"
Relatore: Prof. Miguel Vazquez-Mozo- Cern (Ginevra)
02 Dicembre 2003 ore 15.30
|I will study general properties of noncommutative field
theories and in particular the extension of Wightman axioms to
this context. I will present a proof of the CPT theorem for theories with
space-space noncommutativity and analyze questions associated to the
spin-statistics connection. Finally, I study N=4 noncommutative SYM
theories softly broken to N=0 and show how some of the problems derived
from UV/IR mixing can be tamed in this case, at the price of introducing a
massive fine tuning of the soft-breaking masses.