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Seeing stable topology using instabilities

 E-Mail IMAGE: The spatial intensity profile of a laser beam propagating in a nonlinear medium spontaneously becomes nonuniform due to the process of modulational instability. view more  Credit: Institute for Basic Science We are most familiar with the four conventional phases of matter: solid, liquid, gas, and plasma. Changes between two phases, known as phase transitions, are marked by abrupt changes in material properties such as density. In recent decades a wide body of physics research has been devoted to discovering new unconventional phases of matter, which typically emerge at ultra-low temperatures or in specially-structured materials. Exotic topological phases exhibit properties that can only change in a quantized (step-wise) manner, making them intrinsically robust against impurities and defects.

SEAS Prof Behind Withdrawn Policing Course Continues Research, Plans Fall 2021 Iteration | News

Bioengineering professor Kevin K. “Kit” Parker wrote in a statement to The Crimson Thursday that he plans to teach a course on data analysis and policing strategy in fall 2021, despite cancelling the course this semester after student backlash. In the statement, Parker — a professor at the Harvard School of Engineering and Applied Sciences — said he is continuing the research that he planned to conduct in the class on the Springfield, Mass. police department, and criticized Harvard students who pushed for the course’s cancellation in late January. Parker’s course Engineering Sciences 298R: “Data Fusion in Complex Systems: A Case Study” would have enabled SEAS graduate students to use data analytics to study how the Springfield Police Department deploys Counter-Criminal Continuum policing, or C3 — a law enforcement strategy — in the city’s North End neighborhood. C3 was developed by a friend of Parker’s and is based on Unit

Best case scenario? 50% of Michiganders vaccinated by June, experts project

Climate Change and Suppression Tactics are Critical Factors in Increasing Fires, Study Shows

The millions of people affected by 2020’s record-breaking and deadly fire season can attest to the fact that wildfire hazards are increasing across western North America. Both climate change and forest management have been blamed, but the relative influence of these drivers is still heavily debated. The results of a recent study show that in some ecosystems, human-caused

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