Abstract
We show that the dynamic structure factor of a one-dimensional Bose liquid has a power-law singularity defining the main mode of collective excitations. Using the Lieb-Liniger model, we evaluate the corresponding exponent as a function of the wave vector and the interaction strength.
| Original language | English |
|---|---|
| Article number | 110405 |
| Journal | Physical Review Letters |
| Volume | 99 |
| Issue number | 11 |
| DOIs | |
| State | Published - 14 Sep 2007 |
| Externally published | Yes |