6 citations · 12 across the 12 of their papers we have counts for
12 papers
Reference Frames and Gravitational-Wave Polarizations: Symmetry Classification and Preferred-Frame Phenomenology
Jie Zhu, Hao Li
Gravitational wave (GW) polarizations are traditionally classified in a fixed frame ( classification), which does not account for how polarization patterns change under Loren…
Revisit Static Aether: Exact Vacuum Solution in Einstein-Aether Theory and Its Analytic Extension
Jie Zhu, Hao Li
We obtain an exact analytical vacuum solution of Einstein-Aether theory with a strictly static aether configuration and investigate its maximal extension. The solution depends only…
Dynamic Aspects of Bumblebee Gravity: Post-Newtonian Approach
Jie Zhu, Hao Li
In this work, we investigate the dynamic aspects of Bumblebee gravity via the parameterized post-Newtonian method. We find that the PPN framework is self-consistent up to 1.5PN ord…
On the Consistency of Covariant Light-Speed Variation in Doubly Special Relativity
Hao Li, Jie Zhu
Doubly special relativity (DSR) introduces an observer-independent energy scale while preserving a deformed relativistic notion of covariance. In many realizations, this leads to a…
Hamiltonian Constraints on Spontaneous Lorentz Symmetry Breaking in the Bumblebee Model
Jie Zhu, Hao Li, Zhi Xiao
This study demonstrates that the common practice of determining spontaneous Lorentz violation via the minimum of a Lagrangian potential is generally incorrect. By analyzing the Ham…
New Exact Vacuum Solutions in Extended Bumblebee Gravity
Jie Zhu, Hao Li
We investigate the static spherically symmetric vacuum solutions in a generalized bumblebee gravity model characterized by non-minimal couplings and . We demo…
Testing the strong equivalence principle with multimessenger binary neutron star mergers
Jie Zhu, Hanlin Song, Zhenwei Lyu +5
The constancy of the gravitational constant is a cornerstone of the strong equivalence principle and of general relativity, yet its possible temporal variation remains a key ta…
Exploring Lorentz Violation in Spacetime through Universal Finsler Geometry
Jie Zhu, Hao Li, Bo-Qiang Ma
Finsler geometry serves as a fundamental and natural extension of Riemannian geometry, providing a valuable framework for investigating Lorentz violation in spacetime. Previous stu…
Parameterized Post-Newtonian Analysis of Quadratic Gravity and Solar System Constraints
Jie Zhu, Hao Li
This work systematically investigates the post-Newtonian behavior of general quadratic gravity in the weak-field regime. By extending the Einstein-Hilbert action to include quadrat…
Full Classification of Static Spherical Vacuum Solutions to Bumblebee Gravity with General VEVs
Jie Zhu, Hao Li
The static spherical vacuum solution in a bumblebee gravity model where the bumblebee field has a two-component space-like, light-like, and time-like vacuum expectation value…
Gravitational-wave constraints on noncommutative spacetime from GW190814
Hanlin Song, Hao Li, Zhenwei Lyu +3
Recent advances in noncommutative geometry and string theory have stimulated increasing research on noncommutative gravity. The detection of gravitational waves~(GW) opens a new wi…
Static Spherical Vacuum Solution to Bumblebee Gravity with Time-like VEVs
Hao Li, Jie Zhu
The static spherical vacuum solution in a bumblebee gravity model where the bumblebee field \(B_μ\) has a one-component time-like vacuum expectation value \(b_μ\) is studied. We sh…