Extended conformal symmetry of the one-dimensional Bose gas

Abstract

We show that the low-lying excitations of the one-dimensional Bose gas are described, at all orders in a 1/N expansion and at the first order in the inverse of the coupling constant, by an effective hamiltonian written in terms of an extended conformal algebra, namely the Cartan subalgebra of the $W_{1+\infty }\times {\bar{W}}_{1+\infty }$ algebra. This enables us to construct the first interaction term which corrects the hamiltonian of free fermions equivalent to a hard-core boson system.

8 pages, plain LaTeX, no figures

References in corpus (1)

• The extended conformal theory of Luttinger systems

Cited by in corpus (1)

• A new class of Matrix Models arising from the W-infinity Algebra