4 papers
Neutron stars more compact than black holes in quasi-topological gravity: Equilibrium configurations and radial stability
Liang Liang, Zhe Luo, Shoulong Li +1
Within general relativity, black holes are widely regarded as the ultimate benchmark for compactness in the Universe. Recently, however, neutron star models have been constructed i…
Black holes and neutron stars in massive Hellings-Nordtvedt theory
Zhe Luo, Liang Liang, Zhong-Xi Yu +3
Hellings-Nordtvedt theory is a vector-tensor theory in which a vector field is nonminimally coupled to curvature through two independent interactions and $A^μ…
Dyonic RN-like and Taub-NUT-like black holes in Einstein-bumblebee gravity
Shoulong Li, Liang Liang, Liang Ma
Einstein-bumblebee gravity is one of the simplest vector-tensor theories that realizes spontaneous Lorentz symmetry breaking. In this work, we first construct an exact dyonic Reiss…
Neutron stars in Gauss-Bonnet extended Starobinsky gravity
Zhonghai Liu, Ziyi Li, Liang Liang +2
Recently, a class of Gauss-Bonnet extended Starobinsky gravity was proposed, allowing black holes to carry ghost-free massive scalar hair for the first time without requiring addit…