"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." One of these paradoxes involves time reversal. In quantum mechanics, it’s possible to reverse particles ...

It looks like time travel, closed timelike curves, quantum mechanics, and quantum entanglement are once again at the centre ...

Quantum theory is a mind-bending idea, suggesting that, at the subatomic level, particles can exist in multiple states at the same time. Scientists often give the example of physicist Erwin ...

For more than a decade, physicists have argued (and counter-argued) that a subatomic particle can be separated from certain quantum properties, such as its spin—a phenomenon known as the Cheshire cat ...

Convention has it that quantum mechanics and thermodynamics cannot be true simultaneously - so say scientists at the University of Twente ("UT"), The Netherlands. But now, in a new journal paper, UT ...

In the last episode of my column in Notices of the American Mathematical Society, we looked at a particle moving in an attractive central force whose strength is proportional to the inverse cube of ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Quantum mechanics and classical physics don’t always get along, and can sometimes form apparent paradoxes ...