Mathematics – Numerical Analysis
Scientific paper
1999-11-16
J.Comput.Physics 166(2) (2001) 253
Mathematics
Numerical Analysis
16 pages, amstex, 5 figures, changed content
Scientific paper
10.1006/jcph.2000.6649
A model of static boson-fermion star with spherical symmetry based on the scalar-tensor theory of gravity with massive dilaton field is investigated numerically. Since the radius of star is \textit{a priori} an unknown quantity, the corresponding boundary value problem (BVP) is treated as a nonlinear spectral problem with a free internal boundary. The Continuous Analogue of Newton Method (CANM) for solving this problem is applied. Information about basic geometric functions and the functions describing the matter fields, which build the star is obtained. In a physical point of view the main result is that the structure and properties of the star in presence of massive dilaton field depend essentially both of its fermionic and bosonic components.
Boyadjiev Todor L.
Fiziev Plamen P.
Todorov Michail D.
Yazadjiev Stoytcho
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