  I give a pedagogical introduction to some of the many particles and gauge
fields that can emerge in correlated matter. The standard model of materials is
built on Landau's foundational principles: adiabatic continuity and spontaneous
symmetry breaking. These ideas lead to quasiparticles that inherit their
quantum numbers from fundamental particles, Nambu-Goldstone bosons, the
Anderson-Higgs mechanism, and topological defects in order parameters. I then
describe the modern discovery of physics beyond the standard model. Here,
quantum correlations (entanglement) and topology play key roles in defining the
properties of matter. This can lead to fractionalised quasiparticles that carry
only a fraction of the quantum numbers that define fundamental particles. These
particles can have exotic properties: for example Majorana fermions are their
own antiparticles, anyons have exchange statistics that are neither bosonic nor
fermionic, and magnetic monopoles do not occur in the vacuum. Gauge fields
emerge naturally in the description of highly correlated matter and can lead to
gauge bosons. Relationships to the standard model of particle physics are
discussed.
