Slowly Rotating Boson Fermion Stars

TL;DR

This paper demonstrates that combined boson-neutron stars can rotate slowly, challenging previous beliefs that purely boson stars cannot exhibit slow rotation under relativistic conditions.

Contribution

It introduces a relativistic model showing that mixed boson-neutron stars can rotate slowly, unlike purely boson stars, and analyzes their structure and stability.

Findings

Mixed boson-neutron stars can rotate slowly under relativistic conditions.

Purely boson stars are unable to display slow rotation with classical scalar fields.

The structure and stability of these stars are characterized under slow rotation.

Abstract

Relativistic prescription is used to study the slow rotation of stars composed by self-gravitating bosons and fermions (fermions may be considered as neutrons). Previous results demand that purely boson stars are unable to display slow rotation, if one uses relativistic prescription with classical scalar fields. In contrast to this, the present work shows that a combined boson-neutron star in its ground-state can rotate. Their structure and stability are analysed under slow rotation approximations.