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Modifications of gravitational interaction by the effects of quantum fields

Domazet, Silvije (2013) Modifications of gravitational interaction by the effects of quantum fields. Doctoral thesis, Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet.

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Abstract

Modifications of gravitational interaction by the effects of quantum fields are considered. Dependence of gravitational parameters arising from regularization and renormalization of two chosen field theoretical approaches is described. This allows for use of renormalization group methods. Predictions that follow depend on identification of arbitrary scale with respect to physical scales involved in a given physical context. In order to reduce arbitrariness and eliminate the need for qualitative scale identification, a well defined procedure is used to determine the scale. The procedure is primarily based on preserving the covariance of the theory. Procedure is applied at the level of equations of motion and at the level of the action.

Item Type: Thesis (Doctoral thesis)
Uncontrolled Keywords: scale dependent parameters; renormalization group; quantum field theory in curved space-time; average effective action; scale-setting; galaxy rotation curves; cosmology; modified gravity; fixed points
Subjects: NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions: Theoretical Physics Division
Depositing User: Silvije Domazet
Date Deposited: 28 Jan 2014 13:32
Last Modified: 28 Jan 2014 13:32
URI: http://fulir.irb.hr/id/eprint/1298

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