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(Seminar) Accurate Study from Adaptive Perturbation Method
10/21
2020
- Title (Seminar) Accurate Study from Adaptive Perturbation Method
- Speaker
- Date
- Venue
Abstract
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CAS Key Laboratory of Theoretical Physics | ||
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Institute of Theoretical Physics | ||
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Chinese Academy of Sciences | ||
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Seminar | ||
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Title 题目 |
Accurate Study from Adaptive Perturbation Method | |
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Speaker 报告人 |
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Affiliation 所在单位 |
South China Normal University; University of Cape Town | |
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Date 日期 |
2020年10月21日（周三）9:30-11:30 | |
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Venue 地点 |
南楼6420 | |
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Contact Person 所内联系人 |
李理 | |
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Abstract 摘要 |
The adaptive perturbation method decomposes a Hamiltonian by the diagonal elements and non-diagonal elements of the Fock state. The diagonal elements of the Fock state are solvable but can contain the information about interacting constants. The exact solution for each perturbed term can obtain in the harmonic oscillator with the interacting potential, λ1x4/6+λ2x6/120, where λ1 and λ2 are coupling constants, and x is the position operator. We demonstrate the accurate study of the spectrum and <x2> up to the next leading-order correction. In particular, we study a similar problem of Higgs field from the inverted mass term to demonstrate the possible non-trivial application of particle physics. | |