Quantum Monte Carlo study of spin correlations in the one-dimensional Hubbard model
- Department of Physics, University of California, Santa Barbara, California 93106 (United States)
The one-dimensional Hubbard model is studied at and close to half-filling using a generalization of Handscomb's quantum Monte Carlo method. Results for spin-correlation functions and susceptibilities are presented for systems of up to 128 sites. The spin-correlation function at low temperature is well described by a recently introduced formula relating the correlation function of a finite periodic system to the corresponding [ital T]=0 correlation function of the infinite system. For the [ital T][r arrow]0 divergence of the [ital q]=2[ital k][sub [ital F]] spin susceptibility, our results are consistent with the form [chi](2[ital k][sub [ital F]])[similar to][vert bar]ln([ital T])[vert bar][sup [sigma]][ital T[ital K]][sub [rho]][minus]1, with [sigma]=1/2.
- OSTI ID:
- 6327423
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Vol. 48:4; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
Similar Records
Tests for ''new physics'' from /tau/ spin correlation functions for /ital Z//sup 0//r arrow//tau//sup +//tau//sup /minus///r arrow/A/sup +/B/sup /minus//X
Tests to completely measure the photon and Z sup 0 -boson couplings of the. tau. lepton
Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HUBBARD MODEL
CORRELATIONS
COMPUTERIZED SIMULATION
MAGNETIC SUSCEPTIBILITY
MONTE CARLO METHOD
ONE-DIMENSIONAL CALCULATIONS
SPIN
TEMPERATURE DEPENDENCE
ANGULAR MOMENTUM
CALCULATION METHODS
CRYSTAL MODELS
MAGNETIC PROPERTIES
MATHEMATICAL MODELS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
SIMULATION
665400* - Quantum Physics Aspects of Condensed Matter- (1992-)