Quantum theory is challenging long-standing ideas about entropy

Measuring dysfunction within the quantum realm is making a little bit of a multitude. A mathematical examine discovered that three totally different definitions for entropy that have been beforehand regarded as equal don’t at all times match for quantum objects.

When two objects are linked – say a container of sizzling fuel is linked to a colder fuel reservoir – the entropy of the colder one can enhance as a result of the 2 will alternate portions like particles and warmth. For nearly 200 years, physicists have used the identical set…