Low energy excitations of the t-J model in 1D and 2D
| dc.creator | Eder, R. | |
| dc.creator | Chen, Y. C. | |
| dc.creator | Lin, H. Q. | |
| dc.creator | Ohta, Y. | |
| dc.creator | Shih, C. T. | |
| dc.creator | Lee, T. K. | |
| dc.date | 1996-07-15 | |
| dc.date.accessioned | 2026-07-07T03:08:44Z | |
| dc.date.available | 2026-07-07T03:08:44Z | |
| dc.description | We present an exact diagonalization study of the low energy singlet and triplet states for both 1D and 2D t-J model. A scan of the parameter ratio J/t shows that for nearly all low energy states in both 1D and 2D the excitation energy takes the linear form E(t,J) = a t + b J. In 1D this is the natural consequence of the factorization of the low energy wave functions, i.e. spin-charge separation. Examination of the low energy eigenstates in 2D shows that in the singlet sector the lowest states are collective modes, which for larger J correspond to `dynamical hole columns', i.e. a periodic modulation of the hole density. This modulation is well reproduced by treating holes as hard-core Bosons with an attractive interaction. | |
| dc.description | Revtex-file, 4 PRB pages with 5 embedded eps figures. Hardcopies of figures (or the entire manuscript) may be obtained also by e-mail request to R.Eder@phys.rug.nl | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9607104 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9607104 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27610 | |
| dc.subject | Condensed Matter | |
| dc.title | Low energy excitations of the t-J model in 1D and 2D | |
| dc.type | text |