| “Conserved charges” of the Bondi-Metzner-Sachs algebra in the Brans-Dicke theory |
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| 引用本文： | 侯绍齐,朱宗宏.“Conserved charges” of the Bondi-Metzner-Sachs algebra in the Brans-Dicke theory[J].中国物理C（英文版）,2021(2):377-393. |
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| 作者姓名： | 侯绍齐 朱宗宏 |
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| 作者单位： | School of Physics and Technology;Department of Astronomy |
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| 基金项目： | Supported by the National Natural Science Foundation of China(11633001,11920101003);the Strategie Priority Rsearch Program of the Chinese Academy of Sciences(XD2000000);This was also a project funded by China Postdoctoral Science Foundation(2020M672400)。 |
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| 摘 要： | The asymptotic symmetries in the Brans-Dicke theory are analyzed using Penrose's conformal completion method,which is independent of the coordinate system used.These symmetries,indeed,include supertranslations and Lorentz transformations for an asymptotically flat spacetime.With the Wald-Zoupas formalism,“conserved charges”and fluxes of the Bondi-Metzner-Sachs algebra are computed.The scalar degree of freedom contributes only to the Lorentz boost charge,even though it plays a role in various fluxes.The flux-balance laws are further applied to constrain the displacement memory,spin memory,and center-of-mass memory effects.
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| 关 键 词： | Bondi-Metzner-Sachs symmetry conserved charges Brans-Dicke theory gravitational waves memory effects |
"Conserved charges" of the Bondi-Metzner-Sachs algebra in the Brans-Dicke theory |
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| Shaoqi Hou,Zong-Hong Zhu."Conserved charges" of the Bondi-Metzner-Sachs algebra in the Brans-Dicke theory[J].Chinese Physics C,2021(2):377-393. |
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| Authors: | Shaoqi Hou Zong-Hong Zhu |
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| Institution: | (School of Physics and Technology,Wuhan University,Wuhan 430072,China;Department of Astronomy,Beijing Normal University,Beijing 100875,China) |
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| Abstract: | The asymptotic symmetries in the Brans-Dicke theory are analyzed using Penrose's conformal comple-tion method,which is independent of the coordinate system used... |
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