23-27 September 2019
Mainz Institute for Theoretical Physics, Johannes Gutenberg University
Europe/Berlin timezone

Background Independent Quantum Field Theory and Gravitating Vacuum Fluctuations

24 Sep 2019, 11:15
50m
02.430 (Mainz Institute for Theoretical Physics, Johannes Gutenberg University)

02.430

Mainz Institute for Theoretical Physics, Johannes Gutenberg University

Staudingerweg 9 / 2nd floor, 55128 Mainz
Regular Seminar

Speaker

Martin Reuter

Description

The cosmological constant induced by quantum
 vacuum fluctuations is reconsidered within a
manifestly Background Independent approach to
quantum field theory and quantum gravity. It is
shown that in absence of any distinguished rigid
spacetime they do not give rise to the notorious
“cosmological constant problem”. The
 nonperturbative functional renormalization group
for gravity plays a central role, but no specific
UV behavior (e. g. Asymptotic Safety) is required.

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