10.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Sapienza University of RomeIT156 papers
- Scuola Internazionale Superiore di Studi AvanzatiIT146 papers
- University of InsubriaIT88 papers
- University of MilanIT85 papers
- University of TrentoIT85 papers
- Politecnico di TorinoIT78 papers
- University of FlorenceIT74 papers
- University of GenoaIT69 papers
- Centre National de la Recherche ScientifiqueFR65 papers
- The Abdus Salam International Centre for Theoretical Physics (ICTP)IT65 papers
- National Research CouncilLK58 papers
- University of SalernoIT56 papers
6 papers · 2 filters
Bethe Ansatz solution of a new class of Hubbard-type models
A. Osterloh, L. Amico, U. Eckern
We define one-dimensional particles with generalized exchange statistics. The exact solution of a Hubbard-type Hamiltonian constructed with such particles is achieved using the Coo…
Valence-bond states in dynamical Jahn-Teller molecular systems
Giuseppe Santoro, Leonardo Guidoni, Alberto Parola +1
We discuss a hopping model of electrons between idealized molecular sites with local orbital degeneracy and dynamical Jahn-Teller effect, for crystal field environments of sufficie…
Charge density waves and surface Mott insulators for adlayer structures on semiconductors: extended Hubbard modeling
Giuseppe Santoro, Sandro Scandolo, Erio Tosatti
Motivated by the recent experimental evidence of commensurate surface charge density waves (CDW) in Pb/Ge(111) and Sn/Ge(111) sqrt{3}-adlayer structures, as well as by the insulati…
Spin gap in low-dimensional Mott insulators with orbital degeneracy
L. Guidoni, G. Santoro, S. Sorella +2
We consider the exchange Hamiltonian H_ST = -J Sum_{<rr'>} (2 S_r S_r' - 1/2) (2 T_r T_r' - 1/2) describing two isotropic spin-1/2 Heisenberg antiferromagnets coupled by a quartic…
Metallic charge density waves and surface Mott insulators for adlayer structures on semiconductors: extended Hubbard modeling
G. Santoro, S. Sorella, F. Becca +2
Motivated by the recent experimental evidence of commensurate surface CDW in Pb/Ge(111) and Sn/Ge(111) -adlayer structures, as well as by the insulating states found on K…
Phase separation in the 2D Hubbard model: a fixed-node quantum Monte Carlo study
A. C. Cosentini, M. Capone, L. Guidoni +1
Fixed-node Green's function Monte Carlo calculations have been performed for very large 16x6 2D Hubbard lattices, large interaction strengths U=10,20, and 40, and many (15-20) dens…