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| Study of Low-Lying Baryons with Hamiltonian Effective Field Theory |
| 2017-04-13
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| Institute of Theoretical Physics | | Chinese Academy of Sciences | | Key Laboratory of Theoretical Physics | | Seminar | | Title 题目 | Study of Low-Lying Baryons with Hamiltonian Effective Field Theory | | Speaker 报告人 | 刘占伟 博士 | | Affiliation 所在单位 | 兰州大学 | | Date 日期 | 2017年4月13日（周四）上午10：00 | | Venue 地点 | Conference Hall 322, ITP | | Abstract 摘要 | Drawing on experimental data for baryon resonances, Hamiltonian effective field theory (HEFT) is used to predict the positions of the finite-volume energy levels to be observed in lattice QCD simulations. We have studied the low-lying baryons N∗(1535), N∗(1440), and Λ(1405). In the initial analysis, the phenomenological parameters of the Hamiltonian model are constrained by experiment and the finite-volume eigenstate energies are a prediction of the model. The agreement between HEFT predictions and lattice QCD results obtained at finite volume is excellent. These lattice results also admit a more conventional analysis where the low-energy coefficients are constrained by lattice QCD results, enabling a determination of resonance properties from lattice QCD itself. The role and importance of various components of the Hamiltonian model are examined in the finite volume. The analysis of the lattice QCD data can help us to undertand the structure of these states better. | | Contact person 所内联系人 | 郭奉坤 |
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