Spectral interaction between universes
نویسندگان
چکیده
Abstract We derive a perturbative formula for the direct interaction between two four-dimensional geometries. Based on spectral action principle we give an explicit potential up to third order perturbation around flat vacua. present leading terms of as polynomials invariants metrics and compare expansion models bimetric gravity.
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2022
ISSN: ['1475-7516', '1475-7508']
DOI: https://doi.org/10.1088/1475-7516/2022/04/055