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The Λ 2 limit of massive gravity
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نویسنده
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Rham Claudia de ,Tolley Andrew J. ,Zhou Shuang-Yong
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منبع
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journal of high energy physics - 2016 - دوره : 2016 - شماره : 4 - صفحه:1 -35
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چکیده
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Lorentz-invariant massive gravity is usually associated with a strong coupling scale λ3. by including non-trivial effects from the stückelberg modes, we show that about these vacua, one can push the strong coupling scale to higher values and evade the linear vdvz-discontinuity. for generic parameters of the theory and generic vacua for the stückelberg fields, the λ2-decoupling limit of the theory is well-behaved and free of any ghost or gradient-like instabilities. we also discuss the implications for nonlinear sigma models with lorentzian target spaces.
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کلیدواژه
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Classical Theories of Gravity ,Cosmology of Theories beyond the SM ,Sigma Models
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آدرس
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Case Western Reserve University, Department of Physics, USA, Case Western Reserve University, Department of Physics, USA, Case Western Reserve University, Department of Physics, USA
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Authors
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