> Since Pines' Demon is predicted to play an important role in a wide range of phenomena, such as #transitions in particular kinds of #semimetals and #superconductivity , the work has important implications for material #physics .

> Usually in science, a "demon" is a hypothetical opponent for scientists and philosophers to argue against in a thought experiment, but Pines' Demon is quite different.
It's actually a type of #plasmon – a discrete unit of waves among rippling through a population of electrons . Plasmons have been described as the #quantum analogue of an #acoustic sound in a classical gas.

#Physicists Have Observed a 'Demon' Plasmon in Strontium Ruthenate
https://www.sciencealert.com/physicists-have-observed-a-demon-plasmon-in-strontium-ruthenate

#PinesDemon

We continue talking about the #QuantumFieldTheory #Anomalies with the #OpenAccess lecture on #Weyl #Semimetals. Learn about #Topological #QFT, Dirac materials, and mixed anomalies, and discuss what is left unclear with the authors and our community at https://enabla.com/set/153/pub/1071/about