资讯
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【创源大讲堂】粒球计算:一种高效、鲁棒、可解释的人工智能新型理论技术计算机与人工智能学院内容简介
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【创源大讲堂】人工智能赋能的数据库优化技术计算机与人工智能学院内容简介
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【创源大讲堂】大国工程讲座之弘扬青藏铁路精神地球科学与工程学院内容简介
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【创源大讲堂】High-Velocity Friction Studies on Faults with Some Applications to Landslides地球科学与工程学院2024年10月21日下午14:30-16:00犀浦校区x4243Prof. Toshihiko Shimamoto内容简介
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【创源大讲堂】中华民族现代文明的理论特色一一兼谈学术论文选题马克思主义学院内容简介
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【创源大讲堂】发展新质生产力的人文基础马克思主义学院2024年10月18日(周五)14:00马克思主义学院学术报告厅(X31325)成素梅教授内容简介发展新质生产力的人文基础
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【创源大讲堂】学外语是有文化负载的过程:以母语是汉语的英语学习者为例(摘要)外国语学院内容简介
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【创源大讲堂】An Introduction to Solitonic Perturbation Methods物理科学与技术学院2024年10月18日(周五)14:30二号教学楼2539会议室张柏阳 河南大学数学与统计学院博士后内容简介In this talk we will talk about more mathematical and fundational aspects of quantization in general, focusing on its difficulties instead of great achievements. Especially, we will talk about the second kind of divergence in quantum field theory, as a motivation to organically integrate the soitonic contribution into QFT as a whole, and the quantization at the presence of a kink. Recall that renormalization is crucial in obtaining finite order-by-order contributions in formal perturbation theory. However, the matching of renormalization schemes between different topological sectors was for a long time not well defined hence lead to ambiguity. In this talk we will also try to answer the question: If a vacuum sector Hamiltonian is regularized by an energy cutoff, how is the one-kink sector Hamiltonian regularized?
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[创源大讲堂] Orientifold Calabi-Yau threefolds: Constructions and Machine Learning数学学院10月17日上午10点-11点西南交通大学犀浦校区X30456高昕研究员(四川大学)内容简介Using the Kreuzer-Skarke database of 4-dimensional reflexive polytopes, we systematically constructed a new database of orientifold Calabi-Yau threefolds up to h^{1,1}(X) =12. Our approach involved a non-trivial Z_2 involution, with both divisor exchanging and multi-reflections, acting on the Calabi-Yau manifolds. Each of such proper involutions will result in an orientifold Calabi-Yau manifolds and 320,386,067 of them was constructed. We developed a novel algorithm that significantly reduces the complexity of determining the fixed locus under the involutions, followed by the locations of different types of O-planes. It shows that under the proper involutions one end up with majority the O3/O7-planes system and most of them will further admit a naive Type IIB string vacua. Additionally, a new type of free action was determined. We also computed the smoothness and the splitting of Hodge numbers for these orientifold Calabi-Yau threefolds. Finally, We use the machine learning technique to search the polytope which can result in an orientifold Calabi-Yau hypersurface and the“naive type IIB string vacua”.
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【创源大讲堂】Unified lnnovative Mechanical Solutions to Multiphase Massflows: Fast or slow, Bulking or debulking, Narrow or wide, Cold or warm地球科学与工程学院10月15日16:00-18:30犀浦校区X4243Shiva P. Pudasaini内容简介