57 citations · 209 across the 11 of their papers we have counts for
11 papers
A no-go study on gravitational helicity in connection variables
Xiao-Kan Guo, Shupeng Song
We study the gravitational helicity using the covariant phase space method. Starting from the covariant phase space of general relativity expressed in terms of connection variables…
The thermodynamics of isolated horizons in loop quantum gravity
Shupeng Song, Gaoping Long, Cong Zhang +1
The statistical mechanical calculation of the thermodynamical properties of non-rotating isolated horizons are studied in the loop quantum gravity framework. By employing the Hawki…
Loop quantum deparametrized Schwarzschild interior and discrete black hole mass
Cong Zhang, Yongge Ma, Shupeng Song +1
We present the detailed analyses of a model of loop quantum Schwarzschild interior coupled to a massless scalar field and extend the results in our previous rapid communication arX…
Mechanics of Isolated Horizons in Scalar-Tensor Theories
Shupeng Song, Yongge Ma
Based on the first-order action for scalar-tensor theories with the Immirzi parameter, the symplectic form for the spacetimes admitting a weakly isolated horizon as internal bounda…
Loop quantum Schwarzschild interior and black hole remnant
Cong Zhang, Yongge Ma, Shupeng Song +1
The interior of Schwarzschild black hole is quantized by the method of loop quantum gravity. The Hamiltonian constraint is solved and the physical Hilbert space is obtained in the…
Alternative dynamics in loop quantum Brans-Dicke cosmology
Shupeng Song, Cong Zhang, Yongge Ma
To inherit more features of full loop quantum Brans-Dicke theory, the Euclidean and Lorentzian terms of the Hamiltonian constraint are quantized independently in loop quantum Brans…
Entropy of black holes with arbitrary shapes in loop quantum gravity
Shupeng Song, Haida Li, Yongge Ma +1
The quasi-local notion of an isolated horizon is employed to study the entropy of black holes without any particular symmetry in loop quantum gravity. The idea of characterizing th…
Observational signature of a near-extremal Kerr-Sen black hole in the heterotic string theory
Minyong Guo, Shupeng Song, Haopeng Yan
We analytically study the optical appearance of an isotropically emitter orbiting near the horizon of a near-extremely rotating Kerr-Sen (KS) black hole which is an electrically ch…
Light bending and gravitational lensing in Brans-Dicke theory
Xiaojun Gao, Shupeng Song, Jinsong Yang
As an important candidate theory of gravity, Brans-Dicke theory has been widely studied. In this paper, we investigate light bending and gravitational lensing by compact objects in…
An Exploration of the Black Hole Entropy via the Weyl Tensor
Nan Li, Xiao-Long Li, Shu-Peng Song
The Weyl tensor is the trace-free part of the Riemann tensor. Therefore, it is independent of the energy-momentum tensor and is thus not linked to the dynamics of gravitational fie…
Kullback-Leibler entropy and Penrose conjecture in the Lemaitre-Tolman-Bondi model
Nan Li, Xiao-Long Li, Shu-Peng Song
Our universe hosts various large-scale structures from voids to galaxy clusters, so it would be interesting to find some simple and reasonable measure to describe the inhomogeneiti…