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Titolo:
Finite-size scaling in the spin-1/2 XY model on a square lattice
Autore:
Hamer, CJ; Hovelborn, T; Bachhuber, M;
Indirizzi:
Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia Univ New S Wales Sydney NSW Australia 2052 s, Sydney, NSW 2052, Australia Univ Bonn, Inst Angew Math, D-53115 Bonn, Germany Univ Bonn Bonn GermanyD-53115 n, Inst Angew Math, D-53115 Bonn, Germany Fachhsch Regensburg, Fachrichtung Math, D-93049 Regensburg, Germany Fachhsch Regensburg Regensburg Germany D-93049 93049 Regensburg, Germany
Titolo Testata:
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
fascicolo: 1, volume: 32, anno: 1999,
pagine: 51 - 59
SICI:
0305-4470(19990108)32:1<51:FSITSX>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
ZERO-TEMPERATURE PROPERTIES; LONG-RANGE ORDER; GROUND-STATE; MONTE-CARLO; 2 DIMENSIONS; XXZ MODEL; QUANTUM; FERROMAGNET;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Hamer, CJ Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia Univ NewS Wales Sydney NSW Australia 2052 NSW 2052, Australia
Citazione:
C.J. Hamer et al., "Finite-size scaling in the spin-1/2 XY model on a square lattice", J PHYS A, 32(1), 1999, pp. 51-59

Abstract

Energy eigenvalues and order parameters are calculated by exact diagonalization for the isotropic spin-1/2 XY model on square lattices of up to 6 x 6sites. The finite-size scaling behaviour is in excellent agreement with the effective Lagrangian predictions of Hasenfratz and Niedermayer (Hasenfratz P and Niedermayer F 1993 Z Phys. B 92 91). Estimates are obtained for thebulk ground-state energy per site, the spontaneous magnetization, the spin-wave velocity and the spin-wave stiffness.

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Documento generato il 06/07/20 alle ore 08:19:13