34 citations · 107 across the 8 of their papers we have counts for
4 papers · 1 filter
C, P, and T of Braid Excitations in Quantum Gravity
Song He, Yidun Wan
We study the discrete transformations of four-valent braid excitations of framed spin networks embedded in a topological three-manifold. We show that four-valent braids allow seven…
Conserved Quantities and the Algebra of Braid Excitations in Quantum Gravity
Song He, Yidun Wan
We derive conservation laws from interactions of braid-like excitations of embedded framed spin networks in Quantum Gravity. We also demonstrate that the set of stable braid-like e…
Covariant entropy conjecture and concordance cosmological models
Song He, Hongbao Zhang
Recently a covariant entropy conjecture has been proposed for dynamical horizons. We apply this conjecture to concordance cosmological models, namely, those cosmological models fil…
A covariant entropy conjecture on cosmological dynamical horizon
Song He, Hongbao Zhang
We here propose a covariant entropy conjecture on cosmological dynamical horizon. After the formulation of our conjecture, we test its validity in adiabatically expanding universes…