TY - JOUR
T1 - Cosmological constant problem
T2 - Deflation during inflation
AU - Canales, Felipe
AU - Koch, Benjamin
AU - Laporte, Cristobal
AU - RINCON RIVERO, ANGEL
N1 - Publisher Copyright:
© 2020 IOP Publishing Ltd and Sissa Medialab.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - gravity
KW - ination
KW - modified gravity
UR - http://www.scopus.com/inward/record.url?scp=85082403923&partnerID=8YFLogxK
U2 - 10.1088/1475-7516/2020/01/021
DO - 10.1088/1475-7516/2020/01/021
M3 - Article
AN - SCOPUS:85082403923
SN - 1475-7516
VL - 2020
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 1
M1 - 021
ER -