"Normally, the entropy of a system is extensive, that is, proportional to its volume. Somehow, a black hole has an ent…"

"Although group theory is certainly relevant for nineteenth-century physics, it really started to play an important ro…"

"Rotations in 3-dimensional Euclidean space ... form the poster child of group theory and are almost indispensable in …"

"We show that the introduction of a charged scalar particle into the standard theory leads to numerous phenomenologica…"

"In the last few years, an interesting new subject, the study of topological quantum fluids, has emerged. Examples of …"

"One reason I went to Princeton University as an undergraduate was that I had read about a Professor John Wheeler sugg…"

"Ah, group theory! The entire subject is amazing and amusing. Who would have expected that three Platonic solids—the c…"

"That the exchange of a particle can produce a force was one of the most profound conceptual advances in physics. We n…"

"It is difficult to overstate the importance (not to speak of the beauty) of what we have learned: The exchange of a s…"

"It is almost an article of faith among theoretical physicists, enunciated forcefully by Einstein among others, that t…"