Mass and Weak Field Limit of Boson Stars in Brans Dicke Gravity
| dc.creator | Whinnett, A. W. | |
| dc.date | 1997-11-26 | |
| dc.date | 1999-06-14 | |
| dc.date.accessioned | 2026-07-07T03:32:02Z | |
| dc.date.available | 2026-07-07T03:32:02Z | |
| dc.description | We study boson stars in Brans Dicke gravity and use them to illustrate some of the properties of three different mass definitions: the Schwarzschild mass, the Keplerian mass and the Tensor mass. We analyse the weak field limit of the solutions and show that only the Tensor mass leads to a physically reasonable definition of the binding energy. We examine numerically strong field $ω=-1$ solutions and show how, in this extreme case, the three mass values and the conserved particle number behave as a function of the central boson field amplitude. The numerical studies imply that for $ω=-1$, solutions with extremal Tensor mass also have extremal particle number. This is a property that a physically reasonable definition of the mass of a boson star must have, and we prove analytically that this is true for all values of $ω$. The analysis supports the conjecture that the Tensor mass uniquely describes the total energy of an asymptotically flat solution in BD gravity. | |
| dc.description | 16 pages, REVTeX, 1 postscript figure, fully revised with analytical proof of main result. To appear in CQG (August 1999) | |
| dc.identifier | https://arxiv.org/abs/gr-qc/9711080 | |
| dc.identifier | http://arxiv.org/abs/gr-qc/9711080 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/36079 | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.title | Mass and Weak Field Limit of Boson Stars in Brans Dicke Gravity | |
| dc.type | text |