5. Theoretical Physics (CSN4)

Looking for walking technicolor on the lattice

by Dr Benjamin Svetitsky (Tel Aviv)

Aula Seminari (LNF)

Aula Seminari


Via Enrico Fermi, 40 00044 Frascati (Roma)
We have calculated the running coupling in SU(2), SU(3), and SU(4) gauge theories to see whether they have infrared fixed points. An infrared fixed point means no confinement: It means that the long-distance physics is conformal, without a mass scale and indeed without a particle spectrum. All these theories run slowly in perturbation theory, so a nonperturbative determination is interesting. They are also candidates for walking technicolor models, but technicolor might be dead by the time I give this talk.
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