Browsing by Keywords "Gravitation"
Now showing items 1-5 of 5
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Ground-state properties and collective excitations in a 2D Bose-Einstein condensate with gravity-like interatomic attraction
(Springer, 2008)We study the ground-state properties of a Bose-Einstein condensate (BEC) with the short-range repulsion and gravitylike 1/r interatomic attraction in two-dimensions (2D). Using the variational approach, we obtain the ... -
Higher dimensional spherically symmetric gravitational theories
(Bilkent University, 1994)We consider all possible theories in spherically symmetric Riemannian geometry in D-dimensions. We find solutions to such theories, in particular black hole solutions of the low energy limit of the string theory in Ddimensions. -
New classes of spherically symmetric, inhomogeneous cosmological models
(American Physical Society, 2019)We present two classes of inhomogeneous, spherically symmetric solutions of the Einstein-Maxwell-perfect fluid field equations with cosmological constant generalizing the Vaidya-Shah solution. Some special limits of our ... -
Non-Einsteinian black holes in generic 3D gravity theories
(American Physical Society, 2019)The Bañados-Teitelboim-Zanelli (BTZ) black hole metric solves the three-dimensional Einstein’s theory with a negative cosmological constant as well as all the generic higher derivative gravity theories based on the metric; ... -
Some exact solutions of colliding waves, black holes and their thermodynamical properties in Dilaton gravity
(Bilkent University, 1998)We consider all possible theories in spherically symmetric Riemannian geometry in D-dimensions. We find solutions to such theories, in particular black hole solutions of the low energy limit of the string theory in ...
