FUZZY NAMBU–GOLDSTONE PHYSICS

@article{Balachandran2003FUZZYNP,
  title={FUZZY NAMBU–GOLDSTONE PHYSICS},
  author={Aiyalam P. Balachandran and Giorgio Immirzi},
  journal={International Journal of Modern Physics A},
  year={2003},
  volume={18},
  pages={5931-5947}
}
In space–time dimensions larger than 2, whenever a global symmetry G is spontaneously broken to a subgroup H, and G and H are Lie groups, there are Nambu–Goldstone modes described by fields with values in G/H. In two-dimensional space–times as well, models where fields take values in G/H are of considerable interest even though in that case there is no spontaneous breaking of continuous symmetries. We consider such models when the world sheet is a two-sphere and describe their fuzzy analogs for… Expand
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