Robust chaos in a totally symmetric network of four phase oscillators

活动时间:2024-09-08 14:50

活动地点:学院2号楼2202报告厅

主讲人:Alexey Kazakov

主讲人中文简介:

Alexey Kazakov教授致力于非线性动力学和混沌理论的研究,曾在2016年获得Dmitry Zimin“Dynasty”基金会青年数学家竞赛奖项,2018-2019年获得俄罗斯基础研究基金会,2019-2020年获得俄罗斯基础研究基金会,2019-2024年获得俄罗斯基础研究基金会,2021年获得俄罗斯尼日尼诺夫哥罗德州科学与高等教育部颁发的荣誉证书,其卓越工作和贡献赢得了国际学术界的广泛认可。

Alexey Kazakov教授在非线性动力学领域发表了大量高水平的科研论文,涵盖了多个领域,其研究成果在Chaos、Nonlinearity、Commun. Nonlinear Sci. Numer. Simul.、Regul. Chaotic Dyn.等重要学术期刊上发表,并被广泛引用。

活动内容摘要:

We (with E. Karatetskaia, K. Safonov, and D. Turaev) provide conditions on the coupling function such that a system of 4 globally coupled identical oscillators has chaotic attractors, a pair of Lorenz attractors or a 4-winged analogue of the Lorenz attractor. The attractors emerge near the triple instability threshold of the splay-phase synchronization state of the oscillators. We provide theoretical arguments and verify numerically, based on the pseudohyperbolicity test, that the chaotic dynamics are robust with respect to small, e.g. time-dependent, perturbations of the system. The robust chaoticity should also be inherited by any network of weakly interacting  systems with such attractors.

主持人:孙春友