Spectral functions of strongly interacting isospin-1/2 bosons in one dimension
We study a system of one-dimensional (iso)spin-1/2 bosons in the regime of strong repulsive interactions. We argue that the low-energy spectrum of the system consists of acoustic density waves and the spin excitations described by an effective ferromagnetic spin chain with a small exchange constant...
Saved in:
| Published in | Physical review letters Vol. 101; no. 17; p. 170403 |
|---|---|
| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
24.10.2008
|
| Online Access | Get more information |
Cover
Loading…
| Summary: | We study a system of one-dimensional (iso)spin-1/2 bosons in the regime of strong repulsive interactions. We argue that the low-energy spectrum of the system consists of acoustic density waves and the spin excitations described by an effective ferromagnetic spin chain with a small exchange constant J. We use this description to compute the dynamic spin structure factor and the spectral functions of the system. |
|---|---|
| ISSN: | 0031-9007 |
| DOI: | 10.1103/PhysRevLett.101.170403 |