10 citations · 21 across the 8 of their papers we have counts for
9 papers
Quantum Geometry Effects in Quantum Field Theory: Hamiltonian constraint Generates Gravity-Matter Entanglement
Gaoping Long, Cong Zhang
In this paper, we address a foundational challenge in quantum field theory on curved spacetime by developing a consistent framework within loop quantum gravity. We introduce a meth…
Expansion operators in spherically symmetric loop quantum gravity
Xiaotian Fei, Gaoping Long, Yongge Ma +1
The ingoing and outgoing null expansions associated to a spatial 2-sphere are quantized in the spherically symmetric model of loop quantum gravity. It is shown that the resulting e…
Mapping Anisotropies in the Stochastic Gravitational-Wave Background with space detector networks
Zhi-Yuan Li, Zheng-Cheng Liang, Cong-mao Zhang +2
Future space-based gravitational-wave detectors such as TianQin, LISA, and Taiji are expected to conduct joint observations. Such a multi-detector network will provide complementar…
Covariant dynamics from static spherically symmetric geometries
Cong Zhang, Zhoujian Cao
This work reveals a fundamental link between general covariance and Birkhoff's theorem. We extend Birkhoff's theorem from general relativity to a broad class of generally covariant…
Dust shell in effective loop quantum black hole model
Hanno Sahlmann, Cong Zhang
In this work, the dynamics of a dust shell in an effective theory of spherically symmetric gravity containing quantum corrections from loop quantum gravity is investigated. To prov…
Quantum representation of reduced twisted geometry in loop quantum gravity
Gaoping Long, Cong Zhang, Hongguang Liu
In this article, the quantum representation of the algebra among reduced twisted geometries (with respect to the Gauss constraint) is constructed in the gauge invariant Hilbert spa…
The semiclassical propagator for coherent state on twisted geometry
Gaoping Long, Hongguang Liu, Cong Zhang
A new set of twisted geometric variables is introduced to parametrize the holonomy-flux phase space in loop quantum gravity. It is verified that these new geometric variables, afte…
Spin foam amplitude of the black-to-white hole transition
Muxin Han, Dongxue Qu, Cong Zhang
It has been conjectured that quantum gravity effects may cause the black-to-white hole transition due to quantum tunneling. The transition amplitude of this process is explored wit…
Cosmological Dynamics from Covariant Loop Quantum Gravity with Scalar Matter
Muxin Han, Hongguang Liu, Dongxue Qu +2
We study homogenous and isotropic quantum cosmology using the spinfoam formalism of Loop Quantum Gravity (LQG). We define a coupling of a scalar field to the 4-dimensional Lorentzi…