Heating and cooling in self-consistent many-body simulations
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2023
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866909681913430016 |
|---|---|
| author | Yu, Yang Iskakov, Sergei Gull, Emanuel |
| author_facet | Yu, Yang Iskakov, Sergei Gull, Emanuel |
| contents | We present a temperature extrapolation technique for self-consistent many-body methods, which provides a causal starting point for converging to a solution at a target temperature. The technique employs the Carathéodory formalism for interpolating causal matrix-valued functions and is applicable to various many-body methods, including dynamical mean field theory, its cluster extensions, and self-consistent perturbative methods such as the self-consistent GW approximation. We show results that demonstrate that this technique can efficiently simulate heating and cooling hysteresis at a first-order phase transition, as well as accelerate convergence. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_01452 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Heating and cooling in self-consistent many-body simulations Yu, Yang Iskakov, Sergei Gull, Emanuel Strongly Correlated Electrons We present a temperature extrapolation technique for self-consistent many-body methods, which provides a causal starting point for converging to a solution at a target temperature. The technique employs the Carathéodory formalism for interpolating causal matrix-valued functions and is applicable to various many-body methods, including dynamical mean field theory, its cluster extensions, and self-consistent perturbative methods such as the self-consistent GW approximation. We show results that demonstrate that this technique can efficiently simulate heating and cooling hysteresis at a first-order phase transition, as well as accelerate convergence. |
| title | Heating and cooling in self-consistent many-body simulations |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2305.01452 |