Guthardt, Toni and Scheb, Markus and von Delft, Jan and Grusdt, Fabian and Bohrdt, Annabelle (2025) Finite-temperature real-time properties of magnetic polarons in two-dimensional quantum antiferromagnets. PHYSICAL REVIEW B, 112 (20): 205118. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
Due to significant progress in quantum gas microscopy in recent years, there is a rapidly growing interest in real-space properties of single mobile dopands created in correlated antiferromagnetic (AFM) Mott insulators. However, a detailed numerical description remains challenging, even for simple toy models. As a consequence, previous numerical simulations for large systems were largely limited to T = 0. To provide guidance for cold-atom experiments, numerical calculations at finite temperature are required. Here, we numerically study the real-time properties of a single mobile hole in the 2D t-J model at finite temperature and draw a comparison to features observed at T = 0. We find that a three-stage process of hole motion, which was reported at T = 0, is valid even at finite temperature. However, already at low temperatures, the average hole velocity at long times is not simply proportional to the spin coupling, contrary to the T = 0 behavior. Comparing our finite-temperature numerical results with the experimental data from quantum gas microscopy we find a qualitative disagreement: in experiment, hole spreading speeds up with increasing J/t, while in our numerics it slows down. The latter is consistent with the numerical findings previously reported at T = 0.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | T-J MODEL; MATRIX RENORMALIZATION-GROUP; SINGLE-HOLE; COMPOSITE NATURE; SPIN POLARONS; DYNAMICS; MOTION |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Jul 2026 09:16 |
| Last Modified: | 15 Jul 2026 09:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/67356 |
Actions (login required)
 |
View Item |
