117 citations · 1.2k across the 27 of their papers we have counts for
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The Lamb shift in de Sitter spacetime
Wenting Zhou, Hongwei Yu
We study the Lamb shift of both freely-falling and static two-level atoms in interaction with quantized conformally coupled massless scalar fields in the de Sitter-invariant vacuum…
Is the present cosmic expansion decelerating?
Puxun Wu, Hongwei Yu
We probe the recent cosmic expansion by directly reconstructing the deceleration parameter at recent times with a linear expansion at using the low redshift SNIa and B…
The growth factor of matter perturbations in an f(R) gravity
Xiangyun Fu, Puxun Wu, Hongwei Yu
The growth of matter perturbations in the model proposed by Starobinsky is studied in this paper. Three different parametric forms of the growth index are considered respect…
Probing the course of cosmic expansion with a combination of observational data
Zhengxiang Li, Puxun Wu, Hongwei Yu
We study the cosmic expansion history by reconstructing the deceleration parameter from the SDSS-II type Ia supernova sample (SNIa) with two different light curve fits (MLCS…
Lamb Shift for static atoms outside a Schwarzschild black hole
Wenting Zhou, Hongwei Yu
We study, by separately calculating the contributions of vacuum fluctuations and radiation reaction to the atomic energy level shift, the Lamb shift of a static two-level atom inte…