Invertible disformal transformations with arbitrary higher-order derivatives

Invertible disformal transformations with arbitrary higher-order derivatives
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具有任意高阶导数的可逆异形变换

DOI:
10.1103/physrevd.108.084031
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发表时间:
2023
期刊:
影响因子:
5
通讯作者:
Kazufumi Takahashi
Kazufumi Takahashi
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Kazufumi Takahashi

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可逆变形变换是探索无鬼标量张量理论的有用工具。本文构造了涉及标量场的任意高阶协变导数的可逆变形变换的一个推广。结果,我们得到了比以往任何时候都更一般的一类无鬼标量张量理论。值得注意的是,我们的概括是这样的,物质场可以一致地耦合到这些理论,而不会在么正规范中引入不需要的额外自由度。
Invertible disformal transformations serve as a useful tool to explore ghost-free scalar-tensor theories. In this paper, we construct a generalization of invertible disformal transformations that involves arbitrary higher-order covariant derivatives of the scalar field. As a result, we obtain a more general class of ghost-free scalar-tensor theories than ever. Notably, our generalization is such that matter fields can be consistently coupled to these theories without introducing an unwanted extra degree of freedom in the unitary gauge.
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发表时间: 2023-04
影响因子: 6.4
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DOI: --
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发表时间: 2023
期刊:
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