Condensed concepts

And why is it so amazing? Surprises [about physics in two dimensions] occurred in the 1980s when it became possible to study Landau levels ...

Topology is the field of mathematics describing the properties of geometric objects that do not change when they are smoothly deformed. Thes...

 The quantum theory of solids developed in the 1920s provided a theoretical estimate of the ideal strength of crystals. The problem was that...