4D equivalence theorem and gauge symmetry on an orbifold

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概要

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• We investigate high-energy behavior of scattering amplitudes in extra dimensional gauge theory where the gauge symmetry is broken by the boundary conditions. We study, in particular, the 5D SU (5) grand unified theory whose 5th-dimensional coordinate is compactified on S^1/Z_2. We pay attention to the gauge symmetry compatible with the boundary conditions on an orbifold and present the BRST formalism of the 4D theory that is obtained through integration of the 5D theory along the extra dimension. We derive the 4D equivalence theorem on the basis of the Slavnov-Taylor identities. We also calculate the amplitudes of the process including four massive gauge bosons in the external lines and compare them with those for the connected reactions in which the gauge fields are replaced by the corresponding would-be Nambu-Goldstone (NG) fields. We explicitly confirm that the equivalence theorem holds.

• 理論物理学刊行会の論文
• 2005-01-25

著者

• Haba Naoyuki

  Institute of Theoretical Physics, University of Tokushima

• Haba Naoyuki

  Institute Of Theoretical Physics University Of Tokushima

• Abe Yoshikazu

  Department Of Physics Engineering Mie University

• Matsunaga M

  Department Of Material Engineering Faculty Of Engineering Kyushu Institute Of Technology

• Miyachi K

  Department Of Organic And Polymeric Materials Tokyo Institute Of Technology:(present Address)liquid

• HAYAKAWA Katsuhiro

  Department of Physics Engineering, Mie University

• MIYACHI Kenta

  Department of Physics Engineering, Mie University

• Matsumoto Y

  Department Of Applied Biochemistry Tokai University

• Hayakawa Katsuhiro

  Department Of Physics Engineering Mie University

• MATSUMOTO Yasunori

  Department of Physics Engineering, Mie University

• Haba Naoya

  Faculty of Engineering, Mie University

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