期刊
PHYSICAL REVIEW D
卷 82, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.82.061501
关键词
-
资金
- NSF [PHY 07-57190]
- DOE [DE-FG02-92ER40701]
We show that scalar, 0-form, Galileon actions-models whose field equations contain only second derivatives-can be generalized to arbitrary even p-forms. More generally, they need not even depend on a single form, but may involve mixed p combinations, including equal p multiplets, where odd p fields are also permitted: We construct, for given dimension D, general actions depending on scalars, vectors, and higher p-form field strengths, whose field equations are of exactly second derivative order. We also discuss and illustrate their curved-space generalizations, especially the delicate nonminimal couplings required to maintain this order. Concrete examples of pure and mixed actions, field equations, and their curved-space extensions are presented.
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