Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-10-05
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, Invited talks presented at 4th International Conference on Symmetres in Subatomic Physics, June 2-5, 2009, Taipei, Ta
Scientific paper
The idea that the explicit breaking of scale invariance by the trace anomaly of QCD can be rephrased as a spontaneous breaking has been recently exploited to capture the low-energy strong interaction dynamics of dense (and also hot) matter in terms of two dilaton fields, the "soft" (chi_s) and the "hard" (chi_h) fields, in the frame work of the hidden local gauge symmetry. In the Freund-Nambu model, the spontaneous symmetry breaking of scale symmetry is induced by an explicitly breaking term, while the spontaneous symmetry breaking is possible in the flat potential model which is scale symmetric. We discuss the interplay of the soft and hard dilatons using the spontaneously broken scale symmetry schemes and uncover a novel structure of dense matter hitherto unexplored.
Lee Hyun Kyu
Rho Mannque
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