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Tangled quantum whirlpools caught unraveling in an ultracold gas

来源: Phys.org - latest science and technology news stories · 发布于

Tangled quantum whirlpools caught unraveling in an ultracold gas
来源: Phys.org - latest science and technology news stories

When a cloud of atoms is cooled close to absolute zero, its atoms can merge into a Bose–Einstein condensate (BEC): an exotic fluid in which atoms across the whole cloud share a single quantum state. Current theories predict that as a disordered quantum gas settles into this order

When a cloud of atoms is cooled close to absolute zero, its atoms can merge into a Bose–Einstein condensate (BEC): an exotic fluid in which atoms across the whole cloud share a single quantum state. Current theories predict that as a disordered quantum gas settles into this ordered state, a tangle of tiny vortices should form and gradually unravel.

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Einstein's equations may explain the universe without dark energy
科学与环境

Einstein's equations may explain the universe without dark energy

Mathematicians have uncovered what they argue is a fundamental flaw in the standard model of the universe, potentially challenging the need for dark energy. Their calculations suggest that the mathematical framework used to describe cosmic expansion is inherently unstable and tha

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