Metric Expansion from Microscopic Dynamics in an Inhomogeneous Universe
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Publication:3010146
DOI10.1088/0253-6102/54/3/20zbMATH Open1220.83052arXiv1008.2810OpenAlexW3104537587MaRDI QIDQ3010146
Author name not available (Why is that?)
Publication date: 30 June 2011
Published in: (Search for Journal in Brave)
Abstract: Theories with ingredients like the Higgs mechanism, gravitons, and inflaton fields rejuvenate the idea that relativistic kinematics is dynamically emergent. Eternal inflation treats the Hubble constant H as depending on location. Microscopic dynamics implies that H is over much smaller lengths than pocket universes to be understood as a local space reproduction rate. We illustrate this via discussing that even exponential inflation in TeV-gravity is slow on the relevant time scale. In our on small scales inhomogeneous cosmos, a reproduction rate H depends on position. We therefore discuss Einstein-Straus vacuoles and a Lindquist-Wheeler like lattice to connect the local rate properly with the scaling of an expanding cosmos. Consistency allows H to locally depend on Weyl curvature similar to vacuum polarization. We derive a proportionality constant known from Kepler's third law and discuss the implications for the finiteness of the cosmological constant.
Full work available at URL: https://arxiv.org/abs/1008.2810
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