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
11 papers · 2 filters
Symmetric Hubbard Systems with Superconducting Magnetic Response
Agnese Callegari, Michele Cini, Enrico Perfetto +1
In purely repulsive, -symmetric Hubbard clusters a correlation effect produces an effective two-body attraction and pairing; the key ingredient is the availability of W=0 p…
Integrable spin-boson interaction in the Tavis-Cummings model from a generic boundary twist
Luigi Amico, Kazuhiro Hikami
We construct models describing interaction between a spin and a single bosonic mode using a quantum inverse scattering procedure. The boundary conditions are generically twiste…
Negative differential conductance induced by spin-charge separation
F. Cavaliere, A. Braggio, J. T. Stockburger +2
Spin-charge states of correlated electrons in a one-dimensional quantum dot attached to interacting leads are studied in the non-linear transport regime. With non-symmetric tunnel…
Resonating valence bond wave function for the two dimensional fractional spin liquid
S. Yunoki, S. Sorella
The unconventional low-lying spin excitations, recently observed in neutron scattering experiments on , are explained with a spin liquid wave function. The disp…
A chiral spin liquid wave function and the Lieb-Schulz-Mattis theorem
S. Sorella, L. Capriotti, F. Becca +1
We study a chiral spin liquid wave function defined as a Gutwziller projected BCS state with a complex pairing function. After projection, spontaneous dimerization is found for any…
Metal-to-insulator evolution in (NH3)xNaK2C60: an NMR study
M. Ricco, G. Fumera, T. Shiroka +3
A singular evolution toward an insulating phase, shown by 23Na and 13C NMR, has been observed in the superconducting fullerides (NH3)xNaK2C60 for x>1. Unlike most common cases, thi…
Suppression of Dimer Correlations in the Two-Dimensional - Heisenberg Model: an Exact Diagonalization Study
Luca Capriotti, Federico Becca, Alberto Parola +1
We present an exact diagonalization study of the ground state of the spin-half model. Dimer correlation functions and the susceptibility associated to the breaking of t…
Non-trivial fixed point in a twofold orbitally degenerate Anderson impurity model
Michele Fabrizio, Andrew F. Ho, Lorenzo De Leo +1
We study the phase diagram of a twofold orbitally degenerate Anderson impurity model which presents a non-trivial fixed point similar to the two-impurity Kondo model one. Remarkabl…
Field-induced magnetic anisotropy in La0.7Sr0.3CoO3
J. Mira, J. Rivas, M. Vazquez +3
Magnetic anisotropy has been measured for the ferromagnetic La0.7Sr0.3CoO3 perovskite from an analysis of the high-field part of the magnetization vs. field curves, i.e., the magne…
Field-induced XY behavior in the S=1/2 antiferromagnet on the square lattice
Alessandro Cuccoli, Tommaso Roscilde, Ruggero Vaia +1
Making use of the quantum Monte Carlo method based on the worm algorithm, we study the thermodynamic behavior of the S=1/2 isotropic Heisenberg antiferromagnet on the square lattic…
Melting transition of an Ising glass driven by magnetic field
L. Arrachea, D. Dalidovich, V. Dobrosavljević +1
The quantum critical behavior of the Ising glass in a magnetic field is investigated. We focus on the spin glass to paramagnet transition of the transverse degrees of freedom in th…