Abstract
We show that, when considering the scaling factor as an affine variable, the coefficients of the asymptotic expansion of the spectral action on a (Euclidean) Robertson–Walker spacetime are periods of mixed Tate motives, involving relative motives of complements of unions of hyperplanes and quadric hypersurfaces and divisors given by unions of coordinate hyperplanes.
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Communicated by Y. Kawahigashi
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Fathizadeh, F., Marcolli, M. Periods and Motives in the Spectral Action of Robertson–Walker Spacetimes. Commun. Math. Phys. 356, 641–671 (2017). https://doi.org/10.1007/s00220-017-2991-x
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DOI: https://doi.org/10.1007/s00220-017-2991-x