961 citations
- Nankai UniversityCN60 papers
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- Peng Huanwu Center for Fundamental TheoryCN19 papers
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31 papers · 1 filter
Backward uniqueness for general parabolic operators in the whole space
Jie Wu, Liqun Zhang
We prove the backward uniqueness for general parabolic operators of second order in the whole space under assumptions that the leading coefficients of the operator are Lipschitz an…
Identifying Constant Curvature Manifolds, Einstein Manifolds, and Ricci Parallel Manifolds
Feng-Yu Wang
We establish variational formulas for Ricci upper and lower bounds, as well as a derivative formula for the Ricci curvature. As applications, constant curvature manifolds, Einstein…
Structure and Electronic States of a Graphene Double Vacancy with an Embedded Si Dopant
Reed Nieman, Adélia J. A. Aquino, Trevor P. Hardcastle +3
Silicon represents a common intrinsic impurity in graphene, commonly bonding to either three or four carbon neighbors respectively in a single or double carbon vacancy. We investig…
Causality and a-theorem Constraints on Ricci Polynomial and Riemann Cubic Gravities
Yue-Zhou Li, H. Lu, Jun-Bao Wu
In this paper, we study Einstein gravity extended with Ricci polynomials and derive the constraints on the coupling constants from the considerations of being ghost free, exhibitin…
An Iterative Co-Saliency Framework for RGBD Images
Runmin Cong, Jianjun Lei, Huazhu Fu +4
As a newly emerging and significant topic in computer vision community, co-saliency detection aims at discovering the common salient objects in multiple related images. The existin…
The fate of interaction-driven topological insulators under disorder
Jing Wang, Carmine Ortix, Jeroen van den Brink +1
We analyze the effect of disorder on the weak-coupling instabilities of quadratic band crossing point (QBCP) in two-dimensional Fermi systems, which, in the clean limit, display in…