منابع مشابه
Connected Correlators in Quantum Gravity
We discuss the concept of connected, reparameterization invariant matter correlators in quantum gravity. We analyze the effect of discretization in two solvable cases : branched polymers and two-dimensional simplicial gravity. In both cases the naively defined connected correlators for a fixed volume display an anomalous behavior, which could be interpreted as a long-range order. We suggest tha...
متن کاملFinite groups admitting a connected cubic integral bi-Cayley graph
A graph is called integral if all eigenvalues of its adjacency matrix are integers. Given a subset $S$ of a finite group $G$, the bi-Cayley graph $BCay(G,S)$ is a graph with vertex set $Gtimes{1,2}$ and edge set ${{(x,1),(sx,2)}mid sin S, xin G}$. In this paper, we classify all finite groups admitting a connected cubic integral bi-Cayley graph.
متن کاملOn Connected Bi-partitions of a Graph
We explore the connected bi-partitions of a graph i.e. spanning subgraphs of a graph which consist of exactly two connected components. We then relate the bi-partitions to the elements of the Moore-Penrose pseudoinverse of the graph Laplacian (L). Moreover, we establish a topological interpretation for the effective resistance metric and the so called Kirchoff index for the graph in terms of th...
متن کاملBi-metric Gravity and " Dark Matter "
We present a bi-metric theory of gravity containing a length scale of galactic size. For distances less than this scale the theory satisfies the standard tests of General Relativity. For distances greater than this scale the theory yields an effective gravitational constant much larger than the locally observed value of Newton's constant. The transition from one regime to the other through the ...
متن کاملPath Planning for Multiple Robots in Bi-connected Environments
This paper addresses a problem of path planning for multiple robots. A class of the problem with bi-connected environments is defined and a new polynomial-time solving algorithm for this class is proposed. It is shown in the paper that the new algorithm significantly outperforms the existing state-of-the-art domain-independent approaches and it is able to solve problems of real-life size. Intro...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: General Relativity and Gravitation
سال: 2015
ISSN: 0001-7701,1572-9532
DOI: 10.1007/s10714-015-1885-5