On cosmic quantum tunneling from "nothing"

Spanish Relativity Meeting: almost 100 years after Einstein's revolution

Lapiedra, Ramon^1 ; Morales-Lladosa, Juan Antonío^1

Departament d'Astronomia i Astrofísica, Universitat de València, Burjassot, València

E-46100, Spain^1

关键词: Corresponding solutions;    Einstein field equations;    Instantons;    Quantum tunneling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/600/1/012020/pdf
DOI  :  10.1088/1742-6596/600/1/012020

来源: IOP

【 摘 要 】

We extend to a general Λ-Eriedmann-Lemaitre-Robertson-Walker (ΛFLRW) a previous result by Vilenkin and others according to which a closed de Sitter universe could be created from "nothing". More specifically, our main result is that only the closed ΛFLRW universe (but not the open and flat ones) could be created from a corresponding instanton, that is, from the corresponding solution with signature +4 of the Einstein field equations. Before getting this result the suitable corresponding instantons are calculated. The result is in accordance with previous results by another authors obtained by different methods.