Fast Fermion Smearing Scheme with Gaussian-like Profile
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866917598761844736 |
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| author | Li, ChuanYang Draper, Terrence Hua, Jun Liang, Jian Liu, Keh-Fei Shi, Jun Wang, Nan Yang, Yi-bo |
| author_facet | Li, ChuanYang Draper, Terrence Hua, Jun Liang, Jian Liu, Keh-Fei Shi, Jun Wang, Nan Yang, Yi-bo |
| contents | We propose a novel smearing scheme which gives a Gaussian-like profile and is more efficient than the traditional Gaussian smearing in terms of computer time consumption. We also carry out a detailed analysis of the profiles, smearing sizes, and the behaviors of hadron effective masses of different smearing schemes, and point out that having a sufficient number of gauge paths in a smearing scheme is essential to produce strong smearing effects. For a moderate smearing size $\bar{r}\sim 10a$, the time cost for the novel smearing is less than $1/8$ of that for the traditional Gaussian smearing. In practical lattice calculations with larger smearing sizes or finer lattice spacings the improvement will be more substantial. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_02179 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Fast Fermion Smearing Scheme with Gaussian-like Profile Li, ChuanYang Draper, Terrence Hua, Jun Liang, Jian Liu, Keh-Fei Shi, Jun Wang, Nan Yang, Yi-bo High Energy Physics - Lattice We propose a novel smearing scheme which gives a Gaussian-like profile and is more efficient than the traditional Gaussian smearing in terms of computer time consumption. We also carry out a detailed analysis of the profiles, smearing sizes, and the behaviors of hadron effective masses of different smearing schemes, and point out that having a sufficient number of gauge paths in a smearing scheme is essential to produce strong smearing effects. For a moderate smearing size $\bar{r}\sim 10a$, the time cost for the novel smearing is less than $1/8$ of that for the traditional Gaussian smearing. In practical lattice calculations with larger smearing sizes or finer lattice spacings the improvement will be more substantial. |
| title | Fast Fermion Smearing Scheme with Gaussian-like Profile |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2310.02179 |