111 citations · 626 across the 29 of their papers we have counts for
5 papers · 1 filter
On consistent gauge fixing conditions in polymerized gravitational systems
Kristina Giesel, Bao-Fei Li, Parampreet Singh +1
For classical gravitational systems the lapse function and the shift vector are usually determined by imposing appropriate gauge fixing conditions and then demanding their preserva…
Does loop quantum scheme permit a black hole formation?
Bao-Fei Li, Parampreet Singh
We explore the way different loop quantization prescriptions affect the formation of trapped surfaces in the gravitational collapse of a homogeneous dust cloud, with a particular e…
Quantum gravity might restrict a cyclic evolution
Bao-Fei Li, Parampreet Singh
It is generally expected that in a non-singular cosmological model a cyclic evolution is straightforward to obtain on introduction of a suitable choice of a scalar field with a neg…
Non-singular quantum gravitational dynamics of an LTB dust shell model: the role of quantization prescriptions
Kristina Giesel, Bao-Fei Li, Parampreet Singh
We study some consequences of the loop quantization of the outermost dust shell in the Lemaître-Tolman-Bondi spacetime with a homogeneous dust density using different quantization…
Phenomenological implications of modified loop cosmologies: an overview
Bao-Fei Li, Parampreet Singh, Anzhong Wang
In this paper, we first provide a brief review of the effective dynamics of two recently well-studied models of modified loop quantum cosmologies (mLQCs), which arise from differen…