南方科技大学知识苑(SUSTech KC): Initial conditions and degree of freedom of non-local gravity

题名	Initial conditions and degree of freedom of non-local gravity
作者	Calcagni, Gianluca 1; Modesto, Leonardo2 ; Nardelli, Giuseppe 3,4
通讯作者	Calcagni, Gianluca
发表日期	2018-05-14
DOI	10.1007/JHEP05(2018)087
发表期刊	JOURNAL OF HIGH ENERGY PHYSICS 影响因子和分区
ISSN	1029-8479
期号	5
摘要	We prove the equivalence between non-local gravity with an arbitrary form factor and a non-local gravitational system with an extra rank-2 symmetric tensor. Thanks to this reformulation, we use the diffusion-equation method to transform the dynamics of renormalizable non-local gravity with exponential operators into a higher-dimensional system local in spacetime coordinates. This method, first illustrated with a scalar field theory and then applied to gravity, allows one to solve the Cauchy problem and count the number of initial conditions and of non-perturbative degrees of freedom, which is finite. In particular, the non-local scalar and gravitational theories with exponential operators are both characterized by four initial conditions in any dimension and, respectively, by one and eight degrees of freedom in four dimensions. The fully covariant equations of motion are written in a form convenient to find analytic non-perturbative solutions.
关键词	Classical Theories of Gravity Models of Quantum Gravity Nonperturbative Effects
相关链接	[来源记录]
收录类别	SCI
语种	英语
重要成果	NI论文
学校署名	其他
资助项目	MINECO I+D[FIS2014-54800-C2-2-P] ; MINECO I+D[FIS2017-86497-C2-2-P]
WOS研究方向	Physics
WOS类目	Physics, Particles & Fields
WOS记录号	WOS:000432562300010
出版者	SPRINGER
ESI学科分类	PHYSICS
来源库	Web of Science
引用统计	被引频次[WOS]：33
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/27723
专题	理学院_物理系
作者单位	1.CSIC, Inst Estruct Mat, E-28006 Madrid, Spain 2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China 3.Univ Cattolica Sacro Cuore, Dipartimento Matemat & Fis, Via Musei 41, I-25121 Brescia, Italy 4.Univ Trento, Dipartimento Fis, INFN, TIFPA, I-38123 Povo, Trento, Italy
推荐引用方式 GB/T 7714	Calcagni, Gianluca,Modesto, Leonardo,Nardelli, Giuseppe. Initial conditions and degree of freedom of non-local gravity[J]. JOURNAL OF HIGH ENERGY PHYSICS,2018(5).
APA	Calcagni, Gianluca,Modesto, Leonardo,&Nardelli, Giuseppe.(2018).Initial conditions and degree of freedom of non-local gravity.JOURNAL OF HIGH ENERGY PHYSICS(5).
MLA	Calcagni, Gianluca,et al."Initial conditions and degree of freedom of non-local gravity".JOURNAL OF HIGH ENERGY PHYSICS .5(2018).