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Technological University Dublin


Semi-classical gravity combines classical treatment of the gravitational field with quantum mechanical treatment of matter fields. A significant challenge however is the divergence contained within the stress-energy tensor when solving the semi-classical Einstein equations. This work extends to higher dimensions an extremely efficient method for renormalizing the stress-energy tensor of a quantum scalar field in spherically-symmetric black hole spacetimes, thereby removing the divergences. The method applies to a scalar field with arbitrary field parameters. The utility of the method is demonstrated by computing the renormalized stress-energy tensor for a scalar field in the Schwarzschild black hole spacetime for odd dimensions.

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Higher dimensional field theories, Quantum aspects of black holes, Quantum field theory, Quantum fields in curved spacetime, Quantum gravity, Renormalization


Computer Sciences | Mathematics


Dr Cormac Breen, Dr Peter Taylor


First Annual Teaching and Research Showcase 2023


Creative Commons License

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.

A Mode Sum Regularization Prescription in Quantum Field Theory in Curved Spacetimes in Higher Dimensions and for Charged Scalar Fields



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