648 citations
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT160 papers
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28 papers · 1 filter
Chiral symmetry breaking and theta vacuum structure in QCD
G. Morchio, F. Strocchi
The solution of the axial U(1) problem, the role of the topology of the gauge group in forcing the breaking of axial symmetry in any irreducible representation of the observable al…
Non-Abelian Chern-Simons vortices with generic gauge groups
Sven Bjarke Gudnason
We study non-Abelian Chern-Simon BPS-saturated vortices enjoying N=2 supersymmetry in d=2+1 dimensions, with generic gauge groups of the form U(1) x G', with G' being a simple grou…
Fractional Vortices and Lumps
Minoru Eto, Toshiaki Fujimori, Sven Bjarke Gudnason +5
We study what might be called fractional vortices, vortex configurations with the minimum winding from the viewpoint of their topological stability, but which are characterized by…
Non-Abelian Vortices in SO(N) and USp(N) Gauge Theories
Minoru Eto, Toshiaki Fujimori, Sven Bjarke Gudnason +5
Non-Abelian BPS vortices in SO(N) x U(1) and USp(2N) x U(1) gauge theories are constructed in maximally color-flavor locked vacua. We study in detail their moduli and transformatio…
Consistent gravitational anomalies for chiral bosons
Stefano Giaccari, Pietro Menotti
Exact consistent gravitational anomalies for chiral bosons in two dimensions are treated both with the Schwinger-DeWitt regularization and independently through a cohomological pro…
Giant magnons and spiky strings on the conifold
Sergio Benvenuti, Erik Tonni
We find explicit solutions for giant magnons and spiky strings on the squashed three dimensional sphere. For a special value of the squashing parameter the solutions describe strin…