Hot spot effect in subatomic physics

Hot spots in subatomic physics are regions of high energy density or temperature in hadronic or nuclear matter. == Finite size effects == Hot spots are a manifestation of the finite size of the system: in subatomic physics this refers both to atomic nuclei, which consist of nucleons, as well as to nucleons themselves, which are made of quarks and gluons, Other manifestations of finite sizes of these systems are seen in scattering of electrons on nuclei and nucleons.

Source: Wikipedia — Hot spot effect in subatomic physics (CC BY-SA 4.0)