Physics
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..tsf..ca03c&link_type=abstract
American Physical Society, Joint Fall Meeting of the Texas Section of the APS, AAPT, and Zone 13 of the SPS, October 15-17, 1998
Physics
Scientific paper
We study the dynamical evolution of ``boson stars'' in 3D numerical relativity. Boson stars are equilibrium states of a self-gravitating, complex Klein-Gordon field: a resurgence of interest in scalar fields in the context of astroparticle physics and quantum cosmology has prompted investigation of their dynamics, particularly since they are possible dark matter candidates. In addition, even though any direct physical relevance has yet to be demonstrated, boson star systems provide excellent numerical laboratories in which to study strong gravitational fields. Specifically, the boson star model provides an ideal vehicle with which to implement and evaluate (1) various coordinate conditions in the context of the ADM formalism, and (2) multi-dimensional adaptive mesh refinement techniques which appear crucial for many problems in 3D numerical relativity. We first consider boson stars in the Newtonian regime, where the (numerical) stability of single stars is shown and the interaction of multiple-star-systems is simulated. We also discuss issues which hamper progress towards a stable evolution of general relativistic boson stars, and then show some preliminary results for the general relativistic case.
Choi Dae-Il
Choptuik Matthew W.
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