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6 results on '"Li, Xiguo"'

2. General Decomposition of Spin Connection and Topological Structure in Gauss-Bonnet-Chern Density

Author

Duan Yi-Shi and Li Xiguo

Subjects
Physics, High Energy Physics::Theory, Geometric algebra, Physics and Astronomy (miscellaneous), Gauss–Bonnet theorem, Bundle, Structure (category theory), Vector field, Spin connection, Mathematics::Differential Geometry, Function (mathematics), Riemannian manifold, Topology
Abstract

By means of devices of geometric algebra the general decomposition of spin connection on the sphere bundle of a compact -dimensional Riemannian manifold has been studied in detail. Using this decomposition theory it is shown that the Gauss–Bonnet–Chern density of the Euler–Poincare characteristic can be expressed in terms of a smooth vector field and take the form of the function . The topological structure in Gauss–Bonnet–Chern theorem is reviewed.

Published
1998
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6. NUCLEAR MATTER AND PROTON HALO NUCLEI IN A CHIRAL HADRONIC MODEL.

Author

GUO, HUA, LIANG, YINHUA, LI, XIGUO, LIU, YUXIN, and LIU, BO

Subjects
NUCLEAR matter, NUCLEAR structure, CONSTITUTION of matter, PARTICLES (Nuclear physics), NUCLEAR physics, PHYSICS
Abstract

The results for the nuclear-matter properties in a chiral hadronic model have been compared with those in the nonlinear Walecka model. It has been found that the scalar and the vector potentials and binding energies per nucleon for nuclear matter in the chiral hadronic model are very close to those of the RBHF. Two-proton halo in 27S and one-proton halo in 26P are predicted when the chiral hadronic model is extended to study proton halos in light proton-rich nuclei. Comparison between the results obtained in the chiral hadronic model and in the nonlinear Walecka model has been made, it has been shown that the chiral hadronic model can also be used to describe the properties of light proton-rich nuclei. [ABSTRACT FROM AUTHOR]

Published
2004
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