Benchmarking the Exponential Ansatz for the Holstein model
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866929367799562240 |
|---|---|
| author | Yang, Junjie Cui, Zhi-Hao Mahajan, Ankit Zhai, Huanchen Reichman, David R. Chan, Garnet Kin-Lic |
| author_facet | Yang, Junjie Cui, Zhi-Hao Mahajan, Ankit Zhai, Huanchen Reichman, David R. Chan, Garnet Kin-Lic |
| contents | Polarons are quasiparticles formed as a result of lattice distortions induced by charge carriers. The single-electron Holstein model captures the fundamentals of single polaron physics. We examine the power of the exponential ansatz for the polaron ground-state wavefunction in its coupled cluster, canonical transformation, and (canonically transformed) perturbative variants across the parameter space of the Holstein model. Our benchmark serves to guide future developments of polaron wavefunctions beyond the single-electron Holstein model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_18771 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Benchmarking the Exponential Ansatz for the Holstein model Yang, Junjie Cui, Zhi-Hao Mahajan, Ankit Zhai, Huanchen Reichman, David R. Chan, Garnet Kin-Lic Materials Science Chemical Physics Polarons are quasiparticles formed as a result of lattice distortions induced by charge carriers. The single-electron Holstein model captures the fundamentals of single polaron physics. We examine the power of the exponential ansatz for the polaron ground-state wavefunction in its coupled cluster, canonical transformation, and (canonically transformed) perturbative variants across the parameter space of the Holstein model. Our benchmark serves to guide future developments of polaron wavefunctions beyond the single-electron Holstein model. |
| title | Benchmarking the Exponential Ansatz for the Holstein model |
| topic | Materials Science Chemical Physics |
| url | https://arxiv.org/abs/2405.18771 |