Interactions in equations of state of boson stars

M. F.A.R. Sakti, Anto Sulaksono

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Citations (Scopus)

Abstract

We study the equations of state (EOS) of boson stars using two kinds of interaction based on the Klein-Gordon equation of complex scalar field coupled with gravitation and U(1) gauge field in semi-classical manner, i.e. one with repulsive interaction mediated by massive vector mesons (1/2mv2AμAμ) and one with further addition of self-interacting scalar field terms [-1/2γ(Φ∗Φ)2-13κ(Φ∗Φ)3]. The equations of state are obtained from the non-zero energy-momentum tensor of matter's Lagrangian. In our formulations, the equations of state are calculated directly using curved space-time and indirectly using boosted flat space-time frame-works. For the homogeneous assumption and the case of photon as a mediator, we found that the equations of state do not fulfill the causality principle. So, from those analytic formulations, we obtain the equations which can be solved numerically. Therefore, the characteristics of boson stars of two kinds of self-interaction can be investigated.

Original languageEnglish
Title of host publicationInternational Symposium on Current Progress in Mathematics and Sciences 2015, ISCPMS 2015
Subtitle of host publicationProceedings of the 1st International Symposium on Current Progress in Mathematics and Sciences
EditorsTerry Mart, Djoko Triyono
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413764
DOIs
Publication statusPublished - 19 Apr 2016
Event1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015 - Depok, Indonesia
Duration: 3 Nov 20154 Nov 2015

Publication series

NameAIP Conference Proceedings
Volume1729
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015
CountryIndonesia
CityDepok
Period3/11/154/11/15

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