74 citations · 191 across the 15 of their papers we have counts for
7 papers · 1 filter
Zero modes and oscillatory instabilities of a Lorentz-violating Kalb-Ramond field on a Schwarzschild background
Hong-Da Lyu, Zhi Xiao, Zhong-Xi Yu +1
We study equilibrium configurations and linear perturbations of a Lorentz-violating Kalb--Ramond field with a quartic symmetry-breaking potential and a non-minimal Riemann coupling…
Geodesics and shadows of the spindle-deformed Kerr black hole
Hong-Da Lyu, Mingzhi Wang, Shoulong Li
Recently, a new exact Ricci-flat rotating black-hole solution was constructed in four-dimensional general relativity, in which an additional parameter characterizes a spindle d…
Solar-System Bounds on Ricci-flat Spindle Deformations of Schwarzschild
Zhong-Xi Yu, Hong-Da Lyu, Shoulong Li
Recently, a new class of deformed black-hole exact solutions was constructed in four-dimensional general relativity. The deformation is controlled by a parameter , which survive…
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^μA^…
Revisiting black holes and their thermodynamics in Einstein-Kalb-Ramond gravity
Zhong-Xi Yu, Hong-Da Lyu, Mandula Huhe +1
Einstein-Kalb-Ramond (EKR) gravity is an alternative theory in which a rank-two antisymmetric tensor field, the Kalb-Ramond field, is nonminimally coupled to gravity, potentially g…
On the Size of a Black Hole: The Schwarzschild is the Biggest
H. Lu, Hong-Da Lyu
We consider static black holes in Einstein gravity and study parameters characterizing the black hole size, namely the radii of the horizon , photon sphere and bl…
Criticality in Gauged Supergravities
Shou-Long Li, Hong-Da Lyu, Hua-Kai Deng +1
AdS black holes show richer transition behaviors in extended phase space by assuming the cosmological constant and its conjugate quantity to behave like thermodynamic pressure and…