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Cosmological global dynamical systems analysis
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DOI：10.1088/1361-6382/ac7769.png)
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We consider a dynamical systems formulation for models with an exponential scalar field and matter with a linear equation of state in a spatially flat and isotropic spacetime. In contrast to earlier work, which only considered linear hyperbolic fixed point analysis, we do a center manifold analysis of the non-hyperbolic fixed points associated with bifurcations. More importantly though, we construct monotonic functions and a Dulac function. Together with the complete local fixed point analysis this leads to proofs that describe the entire global dynamics of these models, thereby complementing previous local results in the literature.
Keyword:
cosmology
dynamical systems
global dynamics
scalar field
perfect fluid
期刊
IF:
3.7
论文数:
1.3W
被引数:
3.0W
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