期刊
PHYSICAL REVIEW D
卷 102, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.102.083508
关键词
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资金
- STFC Grant [ST/P000762/1]
- European Union's Horizon 2020 Research Council MassiveCosmo ERC-2016-COG [724659]
- Simons Foundation under the Simons Foundation's Origins of the Universe initiative, Cosmology Beyond Einstein's Theory [555326]
- Royal Society
- Imperial College President's Fellowship
- STFC [ST/P000762/1] Funding Source: UKRI
We propose a new class of Proca interactions that enjoy a nontrivial constraint and hence propagates the correct number of degrees of freedom for a healthy massive spin-1 field. We show that the scattering amplitudes always differ from those of the Generalized Proca. This implies that the new class of interactions proposed here are genuinely different from the Generalized Proca and there can be no local field redefinitions between the two. In curved spacetime, massive gravity is the natural covariantization, but we show how other classes of covariantizations can be considered.
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