EPSKrylovSchurBSEType

The method to be used in the Krylov-Schur solver for the case of BSE structured eigenproblems.

Synopsis

typedef enum { EPS_KRYLOVSCHUR_BSE_SHAO,
               EPS_KRYLOVSCHUR_BSE_GRUNING,
               EPS_KRYLOVSCHUR_BSE_PROJECTEDBSE } EPSKrylovSchurBSEType;

Values

• EPS_KRYLOVSCHUR_BSE_SHAO - a Lanczos method proposed by Shao and coauthors

• EPS_KRYLOVSCHUR_BSE_GRUNING - a Lanczos method proposed by Gruning and coauthors

• EPS_KRYLOVSCHUR_BSE_PROJECTEDBSE - a Lanczos method resulting is a projected problem with BSE structure

Note

All variants are implemented in combination with a thick restart, see the details in [Alvarruiz et al., 2025].

References

[Alv25]

F. Alvarruiz, B. Mellado-Pinto, and J. E. Roman. Variants of thick-restart Lanczos for the Bethe-Salpeter eigenvalue problem. arXiv:2503.20920 : retrieved 27 May 2025, 2025. doi:10.48550/arXiv.2503.20920.

See Also

EPS: Eigenvalue Problem Solver, EPSKrylovSchurSetBSEType(), EPSKrylovSchurGetBSEType()

Level

advanced

Location

include/slepceps.h

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