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Higgs-less Higgs mechanism: low-energy expansion
Johannes Hirn, Jan Stern
In this talk, we describe an effective theory for electroweak symmetry breaking without a physical Higgs, based on a symmetry larger than the electroweak gauge group. This symmetry…
Two alternatives of spontaneous chiral symmetry breaking in QCD
Jan Stern
Considering QCD in an Euclidean box, the mechanism of spontaneous breaking of chiral symmetry (SBS) is analyzed in terms of average properties of lowest eigenstates of the Dirac…
How to See the Chiral Structure of QCD Vacuum in Low Energy Scattering
Jan Stern
Precise measurement of the -phase shift at very low energies would provide, for the first time, the experimental evidence in favour of or against the existence of a…
The Amplitude in Generalized Chiral Perturbation Theory
M. Knecht, B. Moussallam, J. Stern
The interaction is studied at one loop order in the framework of Generalized Chiral Perturbation theory