Stability of the Einstein static universe in presence of vacuum energy Export

@article{Carneiro:2009et, abstract = {The Einstein static universe has played a central role in a number of emergent scenarios recently put forward to deal with the singular origin of the standard cosmological model. Here we study the existence and stability of the Einstein static solution in presence of vacuum energy corresponding to conformally-invariant fields. We show that the presence of vacuum energy stabilizes this solution by changing it to a centre equilibrium point, which is cyclically stable. This allows non-singular emergent cosmological models to be constructed in which initially the universe oscillates indefinitely about an initial Einstein static solution and is thus past eternal.}, archivePrefix = {arXiv}, author = {Carneiro, Saulo and Tavakol, Reza}, citeulike-article-id = {5305404}, citeulike-linkout-0 = {http://arxiv.org/abs/0907.4795}, citeulike-linkout-1 = {http://arxiv.org/pdf/0907.4795}, citeulike-linkout-2 = {http://dx.doi.org/10.1103/PhysRevD.80.043528}, day = {26}, doi = {10.1103/PhysRevD.80.043528}, eprint = {0907.4795}, keywords = {cosmology, einstein-static, emergent-universe, stability}, month = {Aug}, posted-at = {2009-08-29 06:51:33}, priority = {2}, title = {Stability of the Einstein static universe in presence of vacuum energy}, url = {http://dx.doi.org/10.1103/PhysRevD.80.043528}, year = {2009} }

TY - JOUR ID - Carneiro:2009et L3 - citeulike-article-id:5305404 N2 - The Einstein static universe has played a central role in a number of emergent scenarios recently put forward to deal with the singular origin of the standard cosmological model. Here we study the existence and stability of the Einstein static solution in presence of vacuum energy corresponding to conformally-invariant fields. We show that the presence of vacuum energy stabilizes this solution by changing it to a centre equilibrium point, which is cyclically stable. This allows non-singular emergent cosmological models to be constructed in which initially the universe oscillates indefinitely about an initial Einstein static solution and is thus past eternal. TI - Stability of the Einstein static universe in presence of vacuum energy KW - cosmology KW - einstein-static KW - emergent-universe KW - stability AU - Carneiro, Saulo AU - Tavakol, Reza PY - 2009/Aug/26/ UR - http://dx.doi.org/10.1103/PhysRevD.80.043528 ER -