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Vacuum effective actions and mass-dependent renormalization in curved space

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 نشر من قبل Omar Zanusso
 تاريخ النشر 2019
  مجال البحث فيزياء
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We review past and present results on the non-local form-factors of the effective action of semiclassical gravity in two and four dimensions computed by means of a covariant expansion of the heat kernel up to the second order in the curvatures. We discuss the importance of these form-factors in the construction of mass-dependent beta functions for the Newtons constant and the other gravitational couplings.



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