Little Higgs
In particle physics, little Higgs is a refined version of the Higgs boson based on the idea of dimensional deconstruction. In these theories, the gauge group has the form of a direct product of several copies of the same factor, for example 
. Each SU(2) factor may be visualized as the SU(2) group living at a particular point along an additional dimension of space. Consequently, many virtues of extra-dimensional theories may be reproduced even though the little Higgs theory is 3+1-dimensional. The little Higgs models are able to predict a naturally light Higgs particle.