Gravitating instantons in 3 dimensions

Download

index.pdf

Date

2000-09-15

Author

Ferstl, A
Tekin, Bayram
Weir, V

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

76
views

40
downloads

We study the Einstein-Chern-Simons gravity coupled to Yang-Mills-Higgs theory in three-dimensional Euclidean space with a cosmological constant. The classical equations reduce to Bogomol'nyi type first order equations in curved space. There are BPS type gauge theory instanton (monopole) solutions of finite action in a gravitational instanton which itself has a finite action. We also discuss gauge theory instantons in the vacuum (zero action) AdS space. In addition we point out to some exact solutions which are singular.

Subject Keywords

Quantum gravity, Instantons

URI

https://hdl.handle.net/11511/38824

Journal

PHYSICAL REVIEW D

DOI

https://doi.org/10.1103/physrevd.62.064003

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Massive higher derivative gravity theories Güllü, İbrahim; Tekin, Bayram; Department of Physics (2011) In this thesis massive higher derivative gravity theories are analyzed in some detail. One-particle scattering amplitude between two covariantly conserved sources mediated by a graviton exchange is found at tree-level in D dimensional (Anti)-de Sitter and flat spacetimes for the most general quadratic curvature theory augmented with the Pauli-Fierz mass term. From the amplitude expression, the Newtonian potential energies are calculated for various cases. Also, from this amplitude and the propagator structu...
Minimal extension of Einstein’s gravity at the quartic order Kenar, Esin; Tekin, Bayram; Department of Physics (2018) We study an extension of Einstein general relativity theory at the quartic order in the curvature. The extended theory has a unique vacuum and a single massless spin-2 excitation about this vacuum, just like general relativity, hence it is called a minimal extension. The extended theory can also be obtained from a particular form of Born-Infeld gravity. We show that the Schwarzschild and Kerr black holes are not exact solutions and the Kretschmann scalar obeys a non-linear wave equation, suggesting that bla...
Higher dimensional metrics of colliding gravitational plane waves Gurses, M; Kahya, EO; Karasu, Atalay (2002-07-15) We give a higher even dimensional extension of vacuum colliding gravitational plane waves with the combinations of collinear and noncollinear polarized four-dimensional metrics. The singularity structure of space-time depends on the parameters of the solution.
Particle content of quadratic and f (R-mu nu sigma rho) theories in (A)dS Tekin, Bayram (2016-05-17) We perform a complete decoupling of the degrees of freedom of quadratic gravity and the generic f(R-mu nu sigma rho) theory about any one of their possible vacua, i.e. maximally symmetric solutions, and find the masses of the spin-2 and spin-0 modes in explicit forms.
Linearization in stability in gravity theories Altaş Kiracı, Emel; Tekin, Bayram; Department of Physics (2018) In a nonlinear theory, such as gravity, physically relevant solutions are usually hard to ﬁnd. Therefore, starting from a background exact solution with symmetries, one uses the perturbation theory, which albeit approximately, provides a lot of information regarding a physical solution. But even this approximate information comes with a price: the basic premise of a perturbative solution is that it should be improvable. Namely, by going to higher order perturbation theory, one should be able to improve and ...

Citation Formats

A. Ferstl, B. Tekin, and V. Weir, “Gravitating instantons in 3 dimensions,” PHYSICAL REVIEW D, pp. 0–0, 2000, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38824.