TH Theoretical Seminar

# What's New with Goldstone?

## by Prof. Hitoshi Murayama (University of California Berkeley (US) and Kavli IPMU (Japan))

Wednesday, 11 December 2013 from to (Europe/Zurich)
at CERN ( 4-3-006 - TH Conference Room )
 Description Spontaneous Symmetry Breaking is a very universal concept applicable for a wide range of subjects: crystal, superfluid, neutron stars, Higgs boson, magnets, and many others. Yet there is a variety in the spectrum of gapless excitations even when the symmetry breaking patterns are the same. We unified all known examples in a single-line Lagrangian of the low-energy effective theory. In addition, we now have a better understanding of what happens with spacetime symmetries, and predict gaps for certain states exactly based on symmetries alone.