Bubble needs strings

Journal of High Energy Physics

Souvik Banerjee¹  Ulf Danielsson²  Suvendu Giri² 

[1] Institut für Theoretische Physik und Astrophysik, Julius-Maximilians-Universität Würzburg;Institutionen för fysik och astronomi, Uppsala Universitet;

关键词: Phenomenology of Large extra dimensions;    Strings and branes phenomenology;   

DOI  :  10.1007/JHEP03(2021)250

来源: DOAJ

【 摘 要 】

Abstract In this paper, we want to emphasize the pivotal role played by strings in the model realizing de Sitter using an expanding bubble, proposed and subsequently developed in [1–3]. Contrary to the Randall-Sundrum model of brane-localized gravity, we use the end points of radially stretched strings to obtain matter sourcing gravity induced on the bubble wall. This allows us to reinterpret the possible volume divergence coming from naive dimensional reduction as mass renormalization in four dimensional particle physics. Furthermore, we argue that the residual time dependence in the bulk, pointed out by some recent work as a possible shortcoming of such models, is automatically cured in presence of these stringy sources.

【 授权许可】

Unknown