171 citations · 1k across the 38 of their papers we have counts for
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gr-qc2021★ 12 cited
Easing the Hubble constant tension?
J. Ambjorn, Y. Watabiki
We show how a modified Friedmann equation, originating from a model of the universe built from a certain algebra, has the potential to explain the difference between the Hubb…
hep-th2021★ 12 cited
Wormholes, a fluctuating cosmological constant and the Coleman mechanism
Jan Ambjorn, Yuki Sato, Yoshiyuki Watabiki
We show that in a two-dimensional model of quantum gravity the summation over all possible wormhole configurations leads to a kind of Coleman mechanism where the cosmological const…