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Title: | N=7超重力中之優化漸進表現以及BCFW Bonus Scaling and BCFW in N=7 Supergravity |
Authors: | En Shih 石恩 |
Advisor: | 黃宇廷(Yu-tin Huang) |
Keyword: | 散射振幅,超重力,N=8,N=7,BCFW遞,大z,壞位移, scattering amplitudes,supergravity,N=8,N=7,BCFW recursion,large-z,bad shift, |
Publication Year : | 2015 |
Degree: | 碩士 |
Abstract: | 本論文概覽重力理論中計算散射振幅的新發展,並且針對一種新的計算方法做探討。我們首先回顧旋量-螺度理論、在殼超重力以及在殼遞迴式的理論基礎。之後我們重點討論使用BCFW遞迴式對於超重力振幅的計算。特别是我們呈現一種基於N=7超重力中BCFW遞迴式的散射振幅展開式。這個表示式能夠顯現重力振幅在特定高能量極限下優化的表現。這是尋找重力振幅的自然構件所踏出的初步研究,其終極目標是揭露重力的結構,以其建構能顯現其隱藏對稱性的描述。 This thesis reviews some aspects of the modern developments in calculation methods and assesses a new expression for scattering amplitudes in gravity. We first revisit the basics of spinor helicity formalism, on-shell superspace, and on-shell recursion relations. Special focus is then given to calculating supergravity amplitudes using BCFW recursion relations. In particular, we present an expansion in the form of a BCFW representation in N=7 supergravity which can manifest bonus behavior of gravity amplitudes under certain high energy limits. This is a initial step in search of natural building blocks for supergravity amplitudes, taken with the eventual goal of uncovering the structure of gravity and providing a description that can manifest its hidden symmetries. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/4588 |
Fulltext Rights: | 同意授權(全球公開) |
Appears in Collections: | 物理學系 |
Files in This Item:
File | Size | Format | |
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ntu-104-1.pdf | 985.11 kB | Adobe PDF | View/Open |
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