Topic: magnetic field

Hart Goldman examines superconductors that support both vortices and fractionally charged anyons. A perpendicular field forces vortices to trap anyons, restricting their winding and replacing the usual superconducting flux quantum with hc/e. A Landau–Ginzburg description of the coupled vortices explains how increasing magnetic field can produce unusual insulating phases containing neutral anyons and a finite thermal Hall response.

Each spring, billions of Bogong moths escape hot conditions in different regions of southeast Australia by migrating over 1000 km to a limited number of cool caves in the Australian Alps, historically used for aestivating over the summer. At the beginning of autumn the same individuals make a return migration to their breeding grounds to reproduce and die. To steer migration Bogong moths sense the Earth’s magnetic field and correlate its directional information with visual cues. In this presentation, we will show that a critically important visual cue is the distribution of starlight within th