INVESTIGADORES
TAMARIT Francisco
artículos
Título:
Generalized Hubbard Hamiltonian: Renormalization-group approach
Autor/es:
SERGIO CANNAS; FRANCISCO TAMARIT; CONSTANTINO TSALLIS
Revista:
PHYSICAL REVIEW B
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 1992 vol. 45 p. 10496 - 10508
ISSN:
1098-0121
Resumen:
We study a generalized Hubbard Hamiltonian which is closed within the framework of a quantum real-space renormalization group, which replaces the d-dimensional hypercubic lattice by a diamondlike lattice. The phase diagram of the generalized Hubbard Hamiltonian is analyzed for the half-filled-band case for d =2 and d =3. Some evidence for superconductivity is presented.
