Dirac-Proca stars

We consider a model consists of the Einstein gravity in four-dimensional spacetime, a Proca field and two Dirac fields through minimum coupling. By numerically solving this model, we obtain two types of solutions: synchronized frequency solutions and non-synchronized frequency solutions. We find tha...

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Bibliographic Details
Published inarXiv.org
Main Authors Tian-Xiang, Ma, Chen, Liang, Ji-Rong, Ren, Yong-Qiang, Wang
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 21.09.2023
Subjects
Binding energy
Stability analysis
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Summary:We consider a model consists of the Einstein gravity in four-dimensional spacetime, a Proca field and two Dirac fields through minimum coupling. By numerically solving this model, we obtain two types of solutions: synchronized frequency solutions and non-synchronized frequency solutions. We find that in the case of two kinds of matter fields, different families of solutions can be obtained in both synchronized and non-synchronized frequency cases, and the two families can shift to each other when certain parameters are changed. Moreover, we calculate the binding energy of multi-field solutions and give the relationship between binding energy \(E\) and synchronized frequency \(\tilde{\omega}\) (non-synchronized frequency \(\tilde{\omega}_P\)), so as to analyze the stability of the corresponding family.
ISSN:2331-8422