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Article 2018-08

Autor: Giribet, G. Miskovic, O. Olea, R. Rivera-Betancour, D.

We give a novel definition of gravitational energy for an arbitrary theory of gravity including quadratic-curvature corrections to Einstein's equations. We focus on the theory in four dimensions, in the presence of a negative cosmological constant, and with asymptotically anti-de Sitter (AdS) bou...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11051

Repositorio Universidad Andrés Bello
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Giribet, G. ,  Miskovic, O. ,  Olea, R. ,  Rivera-Betancour, D. ,  [Energy in higher-derivative gravity via topological regularization] ,  Energy in higher-derivative gravity via topological regularization
Article 2019-01

Autor: Anastasiou, G. Olea, R. Rivera-Betancour, D.

Criticality represents a specific point in the parameter space of a higher-derivative gravity theory, where the linearized field equations become degenerate. In 4D Critical Gravity, the Lagrangian contains a Weyl-squared term, which does not modify the asymptotic form of the curvature. The Weyl2 ...

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/11576

Repositorio Universidad Andrés Bello
Enlace permanente

Anastasiou, G. ,  Olea, R. ,  Rivera-Betancour, D. ,  [Noether–Wald energy in Critical Gravity] ,  Noether–Wald energy in Critical Gravity
Article 2018-06

Autor: Rivera-Betancour, D. Olea, R.

Critical Gravity theory is defined by a particular combination of quadratic couplings in the curvature added on top of 4D Einstein-Hilbert action with negative cosmological constant. As the Lagrangian is given by a Weyl-squared term, the asymptotic form of the curvature is not modified. The coupl...

We thank G. Anastasiou, F. Díaz-Martínez and O. Miskovic for helpful discussions. This work was funded in part by FONDECYT Grant 1131075, CONICYT Grant DPI 2014-0115 and UNAB Grants DI-1336-16/RG. D.R.B was financially supported by Facultad de Ciencias Exactas, UNAB, to attend SOCHIFI 2016 Meeting.

Enlace original: http://repositorio.unab.cl/xmlui/handle/ria/10613

Repositorio Universidad Andrés Bello
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Rivera-Betancour, D. ,  Olea, R. ,  [Noether-Wald Charges in Critical Gravity] ,  Noether-Wald Charges in Critical Gravity

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