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Irrational versus rational charge and statistics in two-dimensional quantum systems.
Chamon, Claudio; Hou, Chang-Yu; Jackiw, Roman; Mudry, Christopher; Pi, So-Young; Schnyder, Andreas P.
Affiliation
  • Chamon C; Physics Department, Boston University, Boston, MA 02215, USA.
Phys Rev Lett ; 100(11): 110405, 2008 Mar 21.
Article in En | MEDLINE | ID: mdl-18517765
We show that quasiparticle excitations with irrational charge and irrational exchange statistics exist in tight-binding systems described, in the continuum approximation, by the Dirac equation in (2+1)-dimensional space and time. These excitations can be deconfined at zero temperature, but when they are, the charge rerationalizes to the value 1/2 and the exchange statistics to that of "quartons" (half-semions).
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Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2008 Type: Article Affiliation country: United States
Search on Google
Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2008 Type: Article Affiliation country: United States