Bosonization

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introduction

  • Bosonization is a nonperturbative method
  • Bosonization is a method for translating a fermionic theory into a bosonic theory, and eventually retranslating part of the latter into a new fermionic language (cf. the Luther-Emery model or the use of Majorana fermions).
  • This translation process is exact in the continuum limit, but does not warrant an exact solution of the model, except in a few exceptional cases (e.g. the Tomonaga-Luttinger model).
  • For the rest, one must rely on renormalization-group analyses, which generally complement bosonization.


Tomonaga-Luttinger model

  • The Tomonaga-Luttinger (TL) model, a continuum theory of interacting fermions, can be translated into a theory of noninteracting bosons and solved exactly



Thirring model



CFT and bosonization

  • The intimate relation between CFT and the conventional bosonization had became manifest when Dotsenko and Fateev represented the CFT correlation functions in terms of correlators of bosonic exponents (1984)



related items

encyclopedia


books


expositions

articles

  • Langmann, Edwin, and Per Moosavi. ‘Construction by Bosonization of a Fermion-Phonon Model’. arXiv:1503.01835 [math-Ph], 5 March 2015. http://arxiv.org/abs/1503.01835.
  • Frenkel, E., and D. Gaitsgory. “Geometric Realizations of Wakimoto Modules at the Critical Level.” arXiv:math/0603524, March 21, 2006. http://arxiv.org/abs/math/0603524.
  • Dotsenko, Vl. S. “The Free Field Representation of the su(2) Conformal Field Theory.” Nuclear Physics B 338, no. 3 (July 16, 1990): 747–58. doi:10.1016/0550-3213(90)90649-X.

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