Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-06-13
Phys.Lett. B534 (2002) 195-200
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, 5 figures, title changed, minor revisions, and more references added
Scientific paper
10.1016/S0370-2693(02)01655-6
We inspect a particular gauge field theory model that describes the properties of a variety of physical systems, including a charge neutral two-component plasma, a Gross-Pitaevskii functional of two charged Cooper pair condensates, and a limiting case of the bosonic sector in the Salam-Weinberg model. It has been argued that this field theory model also admits stable knot-like solitons. Here we produce numerical evidence in support for the existence of these solitons, by considering stable axis-symmetric solutions that can be thought of as straight twisted vortex lines clamped at the two ends. We compute the energy of these solutions as a function of the amount of twist per unit length. The result can be described in terms of a energy spectral function. We find that this spectral function acquires a minimum which corresponds to a nontrivial twist per unit length, strongly suggesting that the model indeed supports stable toroidal solitons.
Lubcke Martin
Nasir S. M.
Niemi A.
Torokoff K.
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