Inconsistencies in four-dimensional Einstein-Gauss-Bonnet gravity

作     者：Julio Arrechea Adria Delhom Alejandro Jimenez-Cano Julio Arrechea;Adrià Delhom;Alejandro Jimenez-Cano

作者机构：Instituto de Astrofisica de Andalucia(IAA-CSIC)Glorieta de la AstronomiaGranadaSpain Departamento de Fisica Teorica and IFICCentro Mixto Universidad de Valencia-CSIC.Universidad de ValenciaBuijassot-46100ValenciaSpain Departamento de Fisica Teorica y del Cosmos and CAFPEUniversidad de Granada18071 GranadaSpain 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2021年第45卷第1期

页      面：89-96页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：supported by PhD contracts of the program FPU 2015 with references FPU15/02864 and FPU15/05406(Spanish Ministry of Economy and Competitiveness),respectively supported by the Spanish Projects(FIS2017-84440-C2-1-P)(MINECO/FEDER,EU)and FIS2016-78198-P(MINECO) the Project No.H2020-MSCA-RISE-2017 Grant No.Fun Fi CO-777740 Project No.SEJI/2017/042(Generalitat Valenciana) the Consolider Program CPANPHY-1205388 the Severo Ochoa Grant No.SEV-2014-0398(Spain) financial support from the Spanish Government through the project FIS2017-86497-C2-2-P(with FEDER contribution) from the State Agency for Research of the Spanish MCIU through the"Center of Excellence Severo Ochoa"award to the Instituto de Astrofísica de Andalucía(SEV-2017-0709) 

主　　题：alternative theories of gravity singularities Einstein・Gauss-Bonnet 

摘      要：We attempt to clarify several aspects concemi ng the recently presented four-dimensional Ein stein-Gauss-Bonnet *** argue that the limiting procedure outlined in[***.124,081301(2020)]generally involves ill-defined terms in the four dimensional field *** ways to circumvent this issue are discussed,alongside remarks regarding specific solutions of the *** prove that,although linear perturbations are well behaved around maximally symmetric backgrounds,the equations for second-order perturbations are illdefined even around a Minkowskia n *** on ally,we perform a detailed analysis of the spherically symmetric solutions and find that the central curvature singularity can be reached within a finite proper time.