Cosmological constant problem: deflation during inflation

被引:23
作者
Canales, Felipe [1 ]
Koch, Benjamin [1 ,2 ]
Laporte, Cristobal [1 ]
Rincon, Angel [3 ]
机构
[1] Pontificia Univ Catolica Chile, Inst Fis, Av Vicuna Mackenna 4860, Santiago, Chile
[2] TU Wien, Inst Theoret Phys, Wiedner Hauptstr 8, A-1040 Vienna, Austria
[3] Pontificia Univ Catolica Valparaiso, Inst Fis, Ave Brasil 2950,Casilla 4059, Valparaiso, Chile
关键词
gravity; inflation; modified gravity; RENORMALIZATION-GROUP; EVOLUTION EQUATION; ASYMPTOTIC SAFETY; QUANTUM-GRAVITY; SYMMETRY; SCENARIO; FLATNESS; UNIVERSE; HORIZON;
D O I
10.1088/1475-7516/2020/01/021
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We argue that the discrepancy between the Planck mass scale and the observed value of the cosmological constant can be largely attenuated, if those quantities are understood as a result of effective, and thus scale-dependent, couplings. We exemplify this mechanism for the early inflationary epoch of the universe by solving the corresponding effective gap equations, subject to an energy condition. Several non-trivial checks and extensions are discussed. A comparison of our results to the renormalization group flow, obtained within the asymptotic safety program reveals a stunning agreement.
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页数:18
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