Anyons and Fractional Statistics

Anyons are quasiparticles in two dimension, not belonging to the two classes of elementary particles, bosons and fermions. They obey fractional exchange statistics intermediate between bosons and fermions. It has been predicted that anyons appear in fractional quantum Hall systems. Although some aspects of anyons such as fractional charges have been detected, experimental search for direct evidence of fractional statistics, the essence of anyons, has been far elusive. I will introduce recent theoretical and experimental efforts on searching anyons.