8 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…
Neutron stars more compact than black holes as a probe of strong-field gravity
Shoulong Li, H. Lü, H. Lü +4
Probing gravity in its strongest regime is a central goal of modern physics, as the nature of the most compact objects reflects fundamental aspects of Einstein's theory of general…
Coupled quintessence with a potential from supergravity exhibits sign-changing interaction
Jincheng Wang, Hongwei Yu, Puxun Wu
Quintessence with a potential motivated by supergravity (SUGRA) exhibits several intriguing features. Depending on its initial conditions, it can behave either as dynamical dark en…
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…
Quantum gravitodiamagnetic interaction
Di Hao, Jiawei Hu, Hongwei Yu
In the framework of linearized quantum gravity, we investigate the quantum gravitational interaction induced by the gravitodiamagnetic coupling of two massive objects to vacuum flu…
Self-consistent neutron stars in a class of massive vector-tensor gravity
Zhe Luo, Shoulong Li, Hongwei Yu
Einstein-bumblebee gravity, as a class of massive non-minimally coupled vector-tensor theories, provides a useful framework for constraining Lorentz symmetry breaking through astro…