# Bethe-Salpeter Eigenvalue Solver Package (BSEPACK) v0.1

## Abstract

The BSEPACK contains a set of subroutines for solving the Bethe-Salpeter Eigenvalue (BSE) problem. This type of problem arises in this study of optical excitation of nanoscale materials. The BSE problem is a structured non-Hermitian eigenvalue problem. The BSEPACK software can be used to compute all or subset of eigenpairs of a BSE Hamiltonian. It can also be used to compute the optical absorption spectrum without computing BSE eigenvalues and eigenvectors explicitly. The package makes use of the ScaLAPACK, LAPACK and BLAS.

- Authors:

- Publication Date:

- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

- Sponsoring Org.:
- USDOE

- Contributing Org.:
- LAWRENCE BERKELEY NATIONAL LAB

- OSTI Identifier:
- 1352907

- Report Number(s):
- BSEPACK; 005241WKSTN00

R&D Project: KJ0403000; 2017-032

- DOE Contract Number:
- AC02-05CH11231

- Resource Type:
- Software

- Software Revision:
- 00

- Software Package Number:
- 005241

- Software CPU:
- WKSTN

- Open Source:
- Yes

- Source Code Available:
- Yes

- Country of Publication:
- United States

### Citation Formats

```
SHAO, MEIYEU, and YANG, CHAO.
```*Bethe-Salpeter Eigenvalue Solver Package (BSEPACK) v0.1*.
Computer software. *https://www.osti.gov//servlets/purl/1352907*. Vers. 00. USDOE. 25 Apr. 2017.
Web.

```
SHAO, MEIYEU, & YANG, CHAO. (2017, April 25). Bethe-Salpeter Eigenvalue Solver Package (BSEPACK) v0.1 (Version 00) [Computer software]. https://www.osti.gov//servlets/purl/1352907.
```

```
SHAO, MEIYEU, and YANG, CHAO. Bethe-Salpeter Eigenvalue Solver Package (BSEPACK) v0.1.
Computer software. Version 00. April 25, 2017. https://www.osti.gov//servlets/purl/1352907.
```

```
@misc{osti_1352907,
```

title = {Bethe-Salpeter Eigenvalue Solver Package (BSEPACK) v0.1, Version 00},

author = {SHAO, MEIYEU and YANG, CHAO},

abstractNote = {The BSEPACK contains a set of subroutines for solving the Bethe-Salpeter Eigenvalue (BSE) problem. This type of problem arises in this study of optical excitation of nanoscale materials. The BSE problem is a structured non-Hermitian eigenvalue problem. The BSEPACK software can be used to compute all or subset of eigenpairs of a BSE Hamiltonian. It can also be used to compute the optical absorption spectrum without computing BSE eigenvalues and eigenvectors explicitly. The package makes use of the ScaLAPACK, LAPACK and BLAS.},

url = {https://www.osti.gov//servlets/purl/1352907},

doi = {},

year = {Tue Apr 25 00:00:00 EDT 2017},

month = {Tue Apr 25 00:00:00 EDT 2017},

note =

}

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