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Effective dynamics for boson stars
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0001-7269-5241
2007 (English)In: Nonlinearity, ISSN 0951-7715, E-ISSN 1361-6544, Vol. 20, no 5, 1031-1075 p.Article in journal (Refereed) Published
Abstract [en]

We study solutions close to solitary waves of the pseudo-relativistic Hartree equation describing boson stars under the influence of an external gravitational field. In particular, we analyse the long-time effective dynamics of such solutions. In essence, we establish a ( long-time) stability result for solutions describing boson stars that move under the influence of an external gravitational field. The proof of our main result tackles difficulties that are absent when deriving similar results on effective solitary wave motions for nonlinear Schrodinger equations or nonlinear wave equations. This is due to the fact that the pseudo-relativisitic Hartree equation does not exhibit Galilean or Lorentz covariance.

Place, publisher, year, edition, pages
2007. Vol. 20, no 5, 1031-1075 p.
Keyword [en]
nonlinear schrodinger-equations, solitary waves, quantum-mechanics, ground-states, stability, collapse, limit
Identifiers
URN: urn:nbn:se:kth:diva-16637DOI: 10.1088/0951-7715/20/5/001ISI: 000246553300001Scopus ID: 2-s2.0-34249294052OAI: oai:DiVA.org:kth-16637DiVA: diva2:334679
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Jonsson, B. Lars G.

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