222 citations · 391 across the 4 of their papers we have counts for
4 papers
Instability of the ACW model, and problems with massive vectors during inflation
Burak Himmetoglu, Carlo R. Contaldi, Marco Peloso
We prove that the anisotropic inflationary background of the Ackerman-Carroll-Wise model, characterized by a fixed-norm vector field, is unstable. We found the instability by expli…
Instability of anisotropic cosmological solutions supported by vector fields
Burak Himmetoglu, Carlo R. Contaldi, Marco Peloso
Models with vector fields acquiring a non-vanishing vacuum expectation value along one spatial direction have been proposed to sustain a prolonged stage of anisotropic accelerated…
Isolated Minkowski vacua, and stability analysis for an extended brane in the rugby ball
Burak Himmetoglu, Marco Peloso
We study a recently proposed model, where a codimension one brane is wrapped around the axis of symmetry of an internal two dimensional space compactified by a flux. This construct…
Analysis of Dynamic Axial-Symmetric Shells
Burak Himmetoglu
The aim of this work is to analyze the dynamical behavior of relativistic infinite axial-symmetric shells with flat interior and a radiation filled curved exterior spacetimes. It w…