Infinite-derivative linearized gravity in convolutional form

Infinite-derivative linearized gravity in convolutional form
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卷积形式的无限导数线性化重力

DOI:
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发表时间:
2021
影响因子:
3.5
通讯作者:
A. Mazumdar
A. Mazumdar
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Carlos Heredia;I. Kolář;J. Llosa;Francisco José Maldonado Torralba;A. Mazumdar

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本文旨在将无鬼影无限导数线性化重力的无限阶拉格朗日密度转化为非局域形式。为了实现这一点,我们使用了广义函数理论和S回火分布空间中的傅立叶变换。我们证明了非局部算符域不是定义在整个函数空间上,而是定义在函数空间的一个子集上。此外,我们还证明了这些函数及其导数在所有R3中都是有界的,因此Riemann张量是正则的,并且标量曲率不变量不存在任何时空奇异性。最后,我们探讨了需要满足什么条件才能使S的线性化运动方程的解存在。
This article aims to transform the infinite-order Lagrangian density for ghost-free infinite-derivative linearized gravity into non-local form. To achieve it, we use the theory of generalized functions and the Fourier transform in the space of tempered distributions S′ . We show that the non-local operator domain is not defined on the whole functional space but on a subset of it. Moreover, we prove that these functions and their derivatives are bounded in all R3 and, consequently, the Riemann tensor is regular and the scalar curvature invariants do not present any spacetime singularity. Finally, we explore what conditions we need to satisfy so that the solutions of the linearized equations of motion exist in S′ .
非局域标量场理论中均匀加速源的延迟场
DOI: 10.1103/physrevd.103.105004
发表时间: 2021
期刊: Physical Review D
影响因子: 5
作者:
Kolář, Ivan;Boos, Jens
通讯作者: Boos, Jens
DOI: 10.1103/physrevd.104.024018
发表时间: 2021-03
期刊: Physical Review D
影响因子: 5
作者:
Jens Boos;I. Kolář
通讯作者: Jens Boos;I. Kolář