Supergravity computations without gravity complications

• Main Authors: Cheung, Clifford (Author), D'Eramo, Francesco (Contributor), Thaler, Jesse (Contributor)
• Other Authors: Massachusetts Institute of Technology. Center for Theoretical Physics (Contributor), Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. School of Science (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society (APS), 2012-01-26T16:59:50Z.
• Subjects: Article
• Online Access: Get fulltext

The conformal compensator formalism is a convenient and versatile representation of supergravity (SUGRA) obtained by gauge-fixing conformal SUGRA. Unfortunately, practical calculations often require cumbersome manipulations of component field terms involving the full gravity multiplet. In this paper, we derive an alternative gauge fixing for conformal SUGRA which decouples these gravity complications from SUGRA computations. This yields a simplified tree-level action for the matter fields in SUGRA which can be expressed compactly in terms of superfields and a modified conformal compensator. Phenomenologically relevant quantities such as the scalar potential and fermion mass matrix are then straightforwardly obtained by expanding the action in superspace.
United States. Dept. of Energy. Office of High Energy and Nuclear Physics (Contract No. DE-AC02-05CH11231)
National Science Foundation (U.S.) (Grant No. PHY-0457315)
United States. Dept. of Energy (Contract No. DE-FG02-05ER41360)