Work

Dirac-Proca stars

Year: 2023
Type: preprint
Abstract: 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 $\tildeω$ (non-synchronized frequency $\tildeω_P$), so as to analyze the stability of the corresponding family.
Language: English
Open Access status: green
OpenAlex ID: W4386991193
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