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Infrared behavior in systems with a broken continuous symmetry: classical O(N) model vs interacting bosons
Infrared behavior in systems broken continuous symmetry interacting bosons
2010/11/23
In systems with a spontaneously broken continuous symmetry, the perturbative loop expansion
is plagued with infrared divergences due to the coupling between transverse and longitudinal fluctuations.A...
Cosmology of an asymptotically free scalar field with spontaneous symmetry breaking
asymptotically free scalar spontaneous symmetry breaking
2010/12/20
We solve Einstein’s equation with Robertson-Walker metric as an initial-value problem, using as the source of gravity a Halpern-Huang real scalar field, which was derived from renormalization-group an...
Nonabelian Cosmic Strings from SO(3) Gauge Symmetry
SO(3) Gauge Symmetry nonabelian cosmic strings
2010/4/15
The nature of SO(3) breaking into its closed subgroups and the emergence of nonabelian cosmic strings are discussed. Relevance to GUT breaking and thereby to cosmology is pointed out. Classification o...