61 citations · 74 across the 4 of their papers we have counts for
4 papers
On critical phases in anisotropic spin-1 chains
C. Degli Esposti Boschi, E. Ercolessi, F. Ortolani +1
Quantum spin-1 chains may develop massless phases in presence of Ising-like and single-ion anisotropies. We have studied c=1 critical phases by means of both analytical techniques,…
K-Theory of Noncommutative Lattices
Elisa Ercolessi, Giovanni Landi, Paulo Teotonio-Sobrinho
Noncommutative lattices have been recently used as finite topological approximations in quantum physical models. As a first step in the construction of bundles and characteristic c…
Noncommutative Lattices and the Algebra of their Continuous Functions
Elisa Ercolessi, Giovanni Landi, Paulo Teotonio-Sobrinho
Recently a new kind of approximation to continuum topological spaces has been introduced, the approximating spaces being partially ordered sets (posets) with a finite or at most a…
Noncommutative Lattices and Their Continuum Limits
G. Bimonte, E. Ercolessi, G. Landi +3
We consider finite approximations of a topological space by noncommutative lattices of points. These lattices are structure spaces of noncommutative -algebras which in tur…