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Titolo:
SCALING LIMIT OF THE ONE-DIMENSIONAL ATTRACTIVE HUBBARD-MODEL - THE HALF-FILLED BAND CASE
Autore:
WOYNAROVICH F; FORGACS P;
Indirizzi:
HUNGARIAN ACAD SCI,INST SOLID STATE PHYS,POB 49 H-1525 BUDAPEST 114 HUNGARY UNIV TOURS,FAC SCI,DEPT PHYS,LAB MATH & PHYS THEOR,CNRS UPRESA 6083 F-37200 TOURS FRANCE
Titolo Testata:
Nuclear physics. B
fascicolo: 3, volume: 498, anno: 1997,
pagine: 565 - 603
SICI:
0550-3213(1997)498:3<565:SLOTOA>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROSS-NEVEU MODEL; FINITE-SIZE CORRECTIONS; SU(N) THIRRING MODEL; EXACT MASS GAP; BETHE-ANSATZ; 1-N EXPANSION; CHAIN; EXCITATIONS; SCATTERING; SYMMETRY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
F. Woynarovich e P. Forgacs, "SCALING LIMIT OF THE ONE-DIMENSIONAL ATTRACTIVE HUBBARD-MODEL - THE HALF-FILLED BAND CASE", Nuclear physics. B, 498(3), 1997, pp. 565-603

Abstract

The scaling limit of the higher level Bethe Ansatz (HLBA) equations for a macroscopically half-filled Hubbard chain is considered, These equations practically decouple into three disjoint sets which are again of the BA type, and correspond to the secular equations of three different kinds of dressed particles (one massive and two massless). The finite size corrections and the fine structure of the spectrum show thatthe massless sector corresponds to a conformal field with central charge c = 1 and Gaussian anomalous dimensions. The zero temperature freeenergy is also calculated and is found to be in perfect agreement with the results of a perturbative calculation in the SU(2) chiral Gross-Neveu (CGN) model. Some further arguments are presented supporting theidentification of the model obtained as the relativistic limit of thehalf-filled Hubbard chain with the SU(2) CGN model. (C) 1997 ElsevierScience B.V.

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Documento generato il 16/07/20 alle ore 05:12:42