Quantum calculations amount to sophisticated estimates. But in 1931, Hans Bethe intuited precisely how a chain of particles ...

For over a century, quantum mechanics and Einstein’s general relativity have stood as the cornerstones of modern physics, yet ...

Entropy always increases, but in quantum systems, traditional entropy measures seem constant. TU Wien researchers resolved this paradox by considering Shannon entropy, which accounts for the ...

"Quantum theory then tells us the probabilities to obtain different ... If you are investigating quantum systems that consist of very few particles (for example, a hydrogen atom with only a few ...

But according to quantum theory, entropy should actually stay the ... control over atoms -- think two-photon atomic clocks, cold-atom interferometer sensors and quantum gates -- lasers are the ...

It is a basic principle of quantum theory: sometimes certain physical quantities ... "An electron moving around the nucleus of an atom can only assume very specific energy values.

For almost a century, measurements have indicated that a significant proportion of matter in the universe consists of unknown ...

When world-leading teams join forces, new findings are bound to be made. This is what happened when quantum physicists from ...

At first glance, quantum mechanics might seem strange or even impossible. That’s because our everyday experiences of the laws of physics are very different from how matter and energy behave at the ...