Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Hobill, David"'
Autor:
Masterson, Andrew, Hobill, David
A numerical framework to explore the Brill Wave Initial Value Problem is presented along with a review of some of the theoretical predictions concerning Brill waves. It is demonstrated that there is an agreement between the numerically observed pheno
Externí odkaz:
http://arxiv.org/abs/1809.05179
Autor:
Bryant, Mark, Hobill, David
A golden-ratio-based rectangular tiling of the first quadrant of the Euclidean plane is constructed by drawing vertical and horizontal grid lines which are located at all even powers of $\phi$ along one axis, and at all odd powers of $\phi$ on the ot
Externí odkaz:
http://arxiv.org/abs/1611.01182
The coupled system of the spherically symmetric Einstein--Maxwell differential equations is solved under two different source conditions: non-zero electric charge and pressure anisotropy. Expressions for the metric functions, and pressures which exte
Externí odkaz:
http://arxiv.org/abs/1603.03373
The Tolman~VII solution, an exact analytic solution to the spherically symmetric, static Einstein equations with a perfect fluid source, has many characteristics that make it interesting for modelling high density physical astronomical objects. Here
Externí odkaz:
http://arxiv.org/abs/1601.06337
Publikováno v:
Phys. Rev. D 92(12) 124005
The Tolman VII solution (an exact static spherically symmetric perfect fluid solution) to the Einstein equations is reexamined, and a closed form equation of state (EOS) is deduced for the first time. This EOS allows further analysis leading to a via
Externí odkaz:
http://arxiv.org/abs/1506.05813
Autor:
Wang, Tian, Hobill, David
We show that in a quantum measurement, the preferred basis is determined by the interaction between the apparatus and the quantum system, instead of by the environment. This interaction entangles three degrees of freedom, one system degree of freedom
Externí odkaz:
http://arxiv.org/abs/1412.2852
Autor:
Horváth, Zsolt, Gergely, László Á., Hobill, David, Capozziello, Salvatore, De Laurentis, Mariafelicia
Publikováno v:
Phys.Rev.D88:063009,2013
We discuss weak lensing characteristics in the gravitational field of a compact object in the low-energy approximation of fourth order f(R) gravity theory. The particular solution is characterized by a gravitational strength parameter $\sigma $ and a
Externí odkaz:
http://arxiv.org/abs/1207.1823
Autor:
Pulwicki, Julia, Hobill, David
A new model for biological growth is introduced that couples the geometry of an organism (or part of the organism) to the flow and deposition of material. The model has three dynamical variables (a) a Riemann metric tensor for the geometry, (b) a tra
Externí odkaz:
http://arxiv.org/abs/1010.0475
Publikováno v:
Class.Quant.Grav.27:235006,2010
We derive a generic weak lensing equation and apply it for the study of images produced by tidal charged brane black holes. We discuss the similarities and point out the differences with respect to the Schwarzschild black hole weak lensing, to both f
Externí odkaz:
http://arxiv.org/abs/1005.2286
Autor:
Briet, Jop, Hobill, David
The physics associated with spherically symmetric charged black holes is analyzed from the point of view of using weak gravitational lensing as a means for determining the dimensionality of spacetime. In particular, for exact solutions of electro-vac
Externí odkaz:
http://arxiv.org/abs/0801.3859