Gravitational contributions to the running of gauge couplings are calculated by using different regularizationschemes.As the β function concerns counter-terms of dimension four, only quadratic divergences from the gr...Gravitational contributions to the running of gauge couplings are calculated by using different regularizationschemes.As the β function concerns counter-terms of dimension four, only quadratic divergences from the gravitationalcontributions need to be investigated.A consistent result is obtained by using a symmetry-preserving loop regularizationwith string-mode regulators which can appropriately treat the quadratic divergences and preserve non-abelian gaugesymmetry.The harmonic gauge condition for gravity is used in both diagrammatical and background field calculations,the resulting gravitational corrections to the β function are found to be nonzero, which is different from previous resultspresented in the existing literatures.展开更多
In this paper,the concepts of green development and coordinated development of the Internet are proposed,and the connotation of sustainable development of the Internet is defined further.Based on these,by using the co...In this paper,the concepts of green development and coordinated development of the Internet are proposed,and the connotation of sustainable development of the Internet is defined further.Based on these,by using the comprehensive evaluation method,the Internet sustainable development index(ISDI) system is created and designed,the sustainable development level of the Internet in China is evaluated and measured systematically,and corresponding policy suggestions are given.展开更多
基金Supported by the National Natural Science Foundation of China under Grant Nos.10821504,10491306,10975170 the Project of Knowledge Innovation Program of Chinese Academy of Science
文摘Gravitational contributions to the running of gauge couplings are calculated by using different regularizationschemes.As the β function concerns counter-terms of dimension four, only quadratic divergences from the gravitationalcontributions need to be investigated.A consistent result is obtained by using a symmetry-preserving loop regularizationwith string-mode regulators which can appropriately treat the quadratic divergences and preserve non-abelian gaugesymmetry.The harmonic gauge condition for gravity is used in both diagrammatical and background field calculations,the resulting gravitational corrections to the β function are found to be nonzero, which is different from previous resultspresented in the existing literatures.
基金supported by the National Statistical Scientific Research Project under Grant No.2010LC18
文摘In this paper,the concepts of green development and coordinated development of the Internet are proposed,and the connotation of sustainable development of the Internet is defined further.Based on these,by using the comprehensive evaluation method,the Internet sustainable development index(ISDI) system is created and designed,the sustainable development level of the Internet in China is evaluated and measured systematically,and corresponding policy suggestions are given.
