Highlights of Research Results

We have proved that black holes are elementary particles in superspace and quantum geometry with spherical symmetry is unitary and singularity free. This work will be published in PRD and H.L.Yu will be invited to deliver a talk at The Eighth Asia-Pacific International Conference on Gravitation and Astrophysics held in Nara in 28th, August, 2007.
Obtained the most stringent limit on the parity violating coupling of Dark energy to light by using observed cosmic microwave background power spectra. Phys. Rev. Lett. 97, 161303 (2006).
Riemann normal coordinates: a complete accounting; J. Phys. A: Math. Theor. 40, 2751-54.
Prof. D.S. Lee is invited by Prof. R. Rivers to visit London University and conduct research on applying non-equilibrium techniques to experimental studies of analog gravity using Bose-Einstein condensation.
A reformulation of the Wheeler-DeWitt equation which highlights the role of gauge-invariant three-geometry elements is presented in the general setting of the Barbero-Immirzi extension of Ashtekar's contraints, and when a cosmological constant is also present, Class. Quantum Grav. 24 (2007) 1547-1555.

Highlights of Research Results

We have proved that black holes are elementary particles in superspace and quantum geometry with spherical symmetry is unitary and singularity free. This work will be published in PRD and H.L.Yu will be invited to deliver a talk at The Eighth Asia-Pacific International Conference on Gravitation and Astrophysics held in Nara in 28th, August, 2007. Obtained the most stringent limit on the parity violating coupling of Dark energy to light by using observed cosmic microwave background power spectra. Phys. Rev. Lett. 97, 161303 (2006). Riemann normal coordinates: a complete accounting; J. Phys. A: Math. Theor. 40, 2751-54. Prof. D.S. Lee is invited by Prof. R. Rivers to visit London University and conduct research on applying non-equilibrium techniques to experimental studies of analog gravity using Bose-Einstein condensation. A reformulation of the Wheeler-DeWitt equation which highlights the role of gauge-invariant three-geometry elements is presented in the general setting of the Barbero-Immirzi extension of Ashtekar's contraints, and when a cosmological constant is also present, Class. Quantum Grav. 24 (2007) 1547-1555.