Finite temperature single-particle Green's function in the Lieb-Liniger model
Abstract
We develop a Monte Carlo sampling algorithm to numerically evaluate the Lehmann representation for the finite temperature single-particle Green's function in the repulsive Lieb-Liniger model. This allows us to determine the spectral function in the full range of temperatures and interactions, as well as in generalized Gibbs ensembles. We test our results against known results for dynamics at infinite interaction strength and static correlators, and find excellent agreement.
Fields of Study & Subjects
Material Dynamics and Properties
Advanced Thermodynamics and Statistical Mechanics
Electrostatics and Colloid Interactions
Publication details
- Journal / source
- Physical review. B./Physical review. B
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 16
- Publication date
- 30 March 2026
- Language
- EN