TRIQS/Nevanlinna: Implementation of the Nevanlinna Analytic Continuation method for noise-free data
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_ | 1866909255913701376 |
|---|---|
| author | Iskakov, Sergei Hampel, Alexander Wentzell, Nils Gull, Emanuel |
| author_facet | Iskakov, Sergei Hampel, Alexander Wentzell, Nils Gull, Emanuel |
| contents | We present the TRIQS/Nevanlinna analytic continuation package, an efficient implementation of the methods proposed by J. Fei et al in [Phys. Rev. Lett. 126, 056402 (2021)] and [Phys. Rev. B 104, 165111 (2021)]. TRIQS/Nevanlinna strives to provide a high quality open source (distributed under the GNU General Public License version 3) alternative to the more widely adopted Maximum Entropy based analytic continuation programs. With the additional Hardy functions optimization procedure, it allows for an accurate resolution of wide band and sharp features in the spectral function. Those problems can be formulated in terms of imaginary time or Matsubara frequency response functions. The application is based on the TRIQS C++/Python framework, which allows for easy interoperability with other TRIQS-based applications, electronic band structure codes and visualization tools. Similar to other TRIQS packages, it comes with a convenient Python interface. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2309_01407 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | TRIQS/Nevanlinna: Implementation of the Nevanlinna Analytic Continuation method for noise-free data Iskakov, Sergei Hampel, Alexander Wentzell, Nils Gull, Emanuel Computational Physics We present the TRIQS/Nevanlinna analytic continuation package, an efficient implementation of the methods proposed by J. Fei et al in [Phys. Rev. Lett. 126, 056402 (2021)] and [Phys. Rev. B 104, 165111 (2021)]. TRIQS/Nevanlinna strives to provide a high quality open source (distributed under the GNU General Public License version 3) alternative to the more widely adopted Maximum Entropy based analytic continuation programs. With the additional Hardy functions optimization procedure, it allows for an accurate resolution of wide band and sharp features in the spectral function. Those problems can be formulated in terms of imaginary time or Matsubara frequency response functions. The application is based on the TRIQS C++/Python framework, which allows for easy interoperability with other TRIQS-based applications, electronic band structure codes and visualization tools. Similar to other TRIQS packages, it comes with a convenient Python interface. |
| title | TRIQS/Nevanlinna: Implementation of the Nevanlinna Analytic Continuation method for noise-free data |
| topic | Computational Physics |
| url | https://arxiv.org/abs/2309.01407 |