15 citations · 83 across the 35 of their papers we have counts for
5 papers · 1 filter
A coordinate-free approach to obtaining exact solutions in general relativity: The Newman-Unti-Tamburino solution revisited
Emir Baysazan, Ayse Humeyra Bilge, Tolga Birkandan +1
The Newman-Unti-Tamburino (NUT) solution is characterized as the unique Petrov Type vacuum metric such that the two double principal null directions form an integrable distribu…
Exact Static Solutions for Scalar Fields Coupled to Gravity in -Dimensions
Ayse H. Bilge, Durmus Daghan
Einstein's field equations for a spherically symmetric metric coupled to a massless scalar field are reduced to a system effectively of second order in time, in terms of the variab…
An Exact Solution for Static Scalar Fields Coupled to Gravity in -Dimensions
Durmus Daghan, Ayse H. Bilge
We obtain an exact solution for the Einstein's equations with cosmological constant coupled to a scalar, static particle in static, "spherically" symmetric background in 2+1 dimens…
Do Cosmic Strings Give Rise to Vacuum Fluctuations ?
A. H. Bilge, M. Hortacsu, N. Ozdemir
The role of the identification of the vacuum and non-vacuum space-times in the computation of vacuum fluctuations in the presence of a cosmic string is discussed and an alternative…
Particle Creation If a Cosmic String Snaps
A. H. Bilge, M. Hortacsu, N. Ozdemir
We calculate the Bogolubov coefficients for a metric which describes the snapping of a cosmic string. If we insist on a matching condition for all times {\it and} a particle interp…