How can we tell if a depression treatment works beyond placebo? A new real-world method measuring placebo shows that ...

When quantum spins interact, they can produce collective behaviors that defy long-standing expectations. Researchers have now shown that the Kondo effect behaves very differently depending on spin ...

Collective behavior is an unusual phenomenon in condensed-matter physics. When quantum spins interact together as a system, ...

Nearly two centuries after Michael Faraday first showed that magnetism can twist light, physicists have uncovered a hidden magnetic ingredient inside this classic effect. The new work reveals that the ...