77 citations · 249 across the 7 of their papers we have counts for
7 papers
Dynamics of condensation in growing complex networks
Luca Ferretti, Ginestra Bianconi
A condensation transition was predicted for growing technological networks evolving by preferential attachment and competing quality of their nodes, as described by the fitness mod…
O'Raifeartaigh models with spontaneous R-symmetry breaking
Luca Ferretti
O'Raifeartaigh models with general R-charge assignments can have vacua where both supersymmetry and R-symmetry are spontaneously broken. Most of these vacua are metastable because…
Non-Abelian vortices and monopoles in SO(N) theories
Luca Ferretti, Sven Bjarke Gudnason, Kenichi Konishi
Non-Abelian BPS vortex solutions are constructed in N=2 theories with gauge groups SO(N)\times U(1). The model has N_f flavors of chiral multiplets in the vector representation of…
R-symmetry breaking, runaway directions and global symmetries in O'Raifeartaigh models
Luca Ferretti
We discuss O'Raifeartaigh models with general R-charge assignments, introduced by Shih to break R-symmetry spontaneously. We argue that most of these models have runaway directions…
Non-Abelian duality from vortex moduli: a dual model of color-confinement
Minoru Eto, Luca Ferretti, Kenichi Konishi +5
It is argued that the dual transformation of non-Abelian monopoles occurring in a system with gauge symmetry breaking G -> H is to be defined by setting the low-energy H system in…
Flavour from accidental symmetries
Luca Ferretti, Stephen F. King, Andrea Romanino
We consider a new approach to fermion masses and mixings in which no special "horizontal" dynamics is invoked to account for the hierarchical pattern of charged fermion masses and…