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- Beijing Normal UniversityCN3 papers
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25 papers · 1 filter
Some properties of non-compact complete Riemannian manifolds
Li Ma
In this paper, we study the volume growth property of a non-compact complete Riemannian manifold . We improve the volume growth theorem of Calabi (1975) and Yau (1976), Cheeger,…
Entanglement-assisted transformation is asymptotically equivalent to multiple-copy transformation
Runyao Duan, Yuan feng, Mingsheng Ying
We show that two ways of manipulation of quantum entanglement, namely, entanglement-assisted local transformation [D. Jonathan and M. B. Plenio, Phys. Rev. Lett. {\bf 83}, 3566 (19…
Spin Hall effect in a Doped Mott Insulator
Su-Peng Kou, Xiao-Liang Qi, Zheng-Yu Weng
The existence of conserved spin Hall currents is shown in a strongly correlated system without involving spin-orbit coupling. The spin Hall conductivity is determined by intrinsic…
Study the X-ray Dust Scattering Halos with Chandra Observations of Cygnus X-3 and Cygnus X-1
Jingen Xiang, Shuang Nan Zhang, Yangsen Yao
We improve the method proposed by Yao \emph{et al} (2003) to resolve the X-ray dust scattering halos of point sources. Using this method we re-analyze the Cygnus X-1 data observed…
Elliptic Genera of Complete Intersections
Xiaoguang Ma, Jian Zhou
We propose a new definition of the elliptic genera for complete intersections, not necessarily nonsingular, in projective spaces. We also prove they coincide with the expressions o…
Unambiguous discrimination of mixed quantum states
Chi Zhang, Yuan Feng, Ming Sheng Ying
In this paper, we consider the problem of unambiguous discrimination between a set of mixed quantum states. We first divide the density matrix of each mixed state into two parts by…