Research reveals a surprising topological reversal in quantum systems
by Phys.org
Phys.org— In principle, one shouldn't compare apples to oranges. However, in topology, which is a branch of mathematics, one must do just that. Apples and oranges, it turns out, are said to be topologically the same since they both lack a hole—in contrast to doughnuts or coffee cups, for instance, which both have one (the handle in the case of the cup), and thus are topologically equal.
Phys.org—Research demonstrates a new mechanism of order formation in quantum systems. Researchers Kazuaki Takasan and Kyogo Kawaguchi of the University of Tokyo with Kyosuke Adachi of RIKEN, Japan, have demonstrated that ferromagnetism, an ordered state of atoms, can be induced by increasing particle motility and that repulsive forces between atoms are sufficient to maintain it.
Daily Mail—Britain in talks to join Europe's new air defence system: Grant Shapps reveals new 'Sky Shield' would shoot down missile and drone strikes from foes such as Russia amid calls for our own Iron Dome-style system. The Defence Secretary said the UK is in the early stages of working with its European allies about what a 'Sky Shield may look like'.
Phys.org—New work reveals the 'quantumness' of gravity. Gravity is part of our everyday life. Still, the gravitational force remains mysterious: to this day we do not understand whether its ultimate nature is geometrical, as Einstein envisaged, or governed by the laws of quantum mechanics.