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        for FAIR logo       CRC-TR 211 Logo        Nuclear Physics Colloquium

Venue: Physics Building, Max-von-Laue-Str. 1, PHYS 02.116
Time: Thursday, January 16, 4:30pm (s.t.)
Contact: hees@itp.uni-frankfurt.de

Cosmological "constant", deflation during inflation

Benjamin Koch (Fisica PUC Chile)

It is shown 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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