4 papers
Super-Liouville equation with a spinorial Yamabe type term
Lei Liu, Mingjun Wei
In this paper, we study the super-Liouville equation with a spinorial Yamabe type term, a natural generalization of Liouville equation, super-Liouville equation and spinorial Yamab…
Gravitational lensing of the wormhole in the Eddington-inspired Born-Infeld spacetime with a cosmic string
Xin-Fei Li, Lei-Hua Liu, Yan-Zhi Meng +2
In this work we study gravitational lensing of the wormhole in the Eddington-inspired Born-Infeld (EiBI) spacetime that incorporates with a cosmic string. It was found that the pre…
Non-resonant Hopf Links Near a Hamiltonian Equilibrium Point
C. Grotta-Ragazzo, Lei Liu, Pedro A. S. Salomão
This paper is about the existence of periodic orbits near an equilibrium point of a two-degree-of-freedom Hamiltonian system. The equilibrium is supposed to be a nondegenerate mini…
Slowly rotating black hole in chiral scalar-tensor theory
Ze-Kai Yu, Lei Liu, Tao Zhu
The chiral scalar-tensor theory is an extension of the Chern-Simons modified gravity by introducing couplings between the first and second derivatives of the scalar field and parit…