4 papers
Scalar Casimir Effect on a Two-Dimensional Sphere with a Wu--Yang Magnetic Monopole
Jun-Cheng Zhang, Xiao-Yin Pan, Juhao Wu +1
We investigate the Casimir effect of a complex scalar field on a two-dimensional sphere threaded by a fixed Wu--Yang magnetic monopole at the center. In this background the charged…
Why Barriola--Vilenkin Global Monopoles Cannot Rotate?
Yi Lu, Xiao-Yin Pan, Meng-Yun Lai +1
The Barriola--Vilenkin global monopoles are topological defects predicted by certain grand unified theories and have been extensively studied for their astrophysical and cosmologic…
Finite-Distance Gravitational Lensing of a Global Monopole in a Schwarzschild-de Sitter Spacetime
Yi Lu, Xiao-Yin Pan, Meng-Yun Lai +1
We investigate the gravitational lensing of a Schwarzschild-de Sitter black hole with a global monopole at finite distances. In this asymptotically nonflat spacetime, the deflectio…
Gravitational lensing effect of black holes in effective quantum gravity
Hao Liu, Meng-Yun Lai, Xiao-Yin Pan +2
In the present work, we investigate the gravitational lensing effects of two quantum-modified black hole models recently proposed in effective quantum gravity. The light deflection…