The interest in exotic atoms arises from the fact that they often facilitate the most basic experimental strategy used in physics: changing a single parameter or component in an otherwise complex ...

A complementary approach is to swap the helium gas for liquid helium, which has a much higher density. Sótér and colleagues found that this method could be used to measure very narrow lines in the ...

A quantum state predicted by the Russian theoretician Vitaly Efimov 40 years ago has been discovered by physicists in a molecule consisting of three helium atoms. The molecule is of enormous spatial ...

In recent months, I’ve mentioned super-solids a couple of times, which is a bit unusual for something we haven’t been sure actually exists. However, a recent paper seems to offer some quite strong ...