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Perturbative evaluation of the zero-point function for self-interacting scalar field on a manifold with boundary

George Tsoupros

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The character of quantum corrections to the gravitational action of a conformally invariant field theory for a self-interacting scalar field on a manifold with boundary is considered at third loop-order in the perturbative expansion of the zero-point function. Diagramatic evaluations and higher loop-order renormalization can be best accomplished on a Riemannian manifold of positive constant curvature accommodating a boundary of constant extrinsic curvature. The associated spherical formulation for diagramatic evaluations reveals a non-trivial effect which the topology of the manifold has on the vacuum processes and which ultimately dissociates the dynamical behaviour of the quantized field from its behaviour in the absence of a boundary. The first surface divergence is evaluated and the necessity for simultaneous renormalization of volume and surface divergences is shown.


PACS

11.10.Gh Renormalization

04.60.-m Quantum gravity

11.15.Bt General properties of perturbation theory

02.40.-k Geometry, differential geometry, and topology

MSC

53C20 Global Riemannian geometry, including pinching (See also 31C12, 58B20)

81T15 Perturbative methods of renormalization

Subjects

Mathematical physics

Gravitation and cosmology

Particle physics and field theory

Dates

Issue 4 (21 February 2002)

Received 10 July 2001, in final form 29 November 2001

Published 6 February 2002



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