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#
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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