Evolution and stability Φ4 oscillatons

Details Evolution and stability Φ4 oscillatons Evolution and stability Φ4 oscillatons

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012cqgra..29f5021u&link_type=abstract

Classical and Quantum Gravity, Volume 29, Issue 6, pp. 065021 (2012).

Physics

Scientific paper

We solve numerically the Einstein-Klein-Gordon (EKG) system, assuming spherical symmetry, for a real scalar field endowed with a quartic self-interaction potential, and obtain the so-called oscillatons: oscillating soliton stars. We obtain the equilibrium configurations for Φ4oscillatons. Also, we analyze numerically the evolution of the EKG equations to study the stability of such oscillatons. We present the influence of the quartic potential on the behavior of both the stable (S-oscillatons) and unstable (U-oscillatons) branches, under the influence of small and large radial perturbations.

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