Toward logarithmic extensions of ^sl(2)_k conformal field models
| dc.creator | Semikhatov, AM | |
| dc.date | 2007-01-30 | |
| dc.date | 2007-04-15 | |
| dc.date.accessioned | 2026-07-07T11:23:36Z | |
| dc.date.available | 2026-07-07T11:23:36Z | |
| dc.description | For positive integer p=k+2, we construct a logarithmic extension of the ^sl(2)_k conformal field theory of integrable representations by taking the kernel of two fermionic screening operators in a three-boson realization of ^sl(2)_k. The currents W^-(z) and W^+(z) of a W-algebra acting in the kernel are determined by a highest-weight state of dimension 4p-2 and charge 2p-1, and a (theta=1)-twisted highest-weight state of the same dimension 4p-2 and charge -2p+1. We construct 2p W-algebra representations, evaluate their characters, and show that together with the p-1 integrable representation characters they generate a modular group representation whose structure is described as a deformation of the (9p-3)-dimensional representation $R_{p-1} \oplus C^2 \tensor R_{p-1} \oplus R_{p-1} \oplus C^2 \tensor R_{p-1} \oplus C^3 \tensor R_{p-1}$, where R_{p-1} is the SL(2,Z)-representation on integrable representation characters and R_{p-1} is a (p+1)-dimensional SL(2,Z)-representation known from the logarithmic (p,1) model. The dimension 9p-3 is conjecturally the dimension of the space of torus amplitudes, and the C^n with n=2 and 3 suggest the Jordan cell sizes in indecomposable W-algebra modules. Under Hamiltonian reduction, the W-algebra currents map into the currents of the triplet W-algebra of the logarithmic (p,1) model. | |
| dc.description | 54 pages, amsart++, xy, graphicx, times&mathptmx. V2: references added, some changes in the presentation | |
| dc.identifier | https://arxiv.org/abs/hep-th/0701279 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0701279 | |
| dc.identifier | Theor.Math.Phys.153:1597-1642,2007 | |
| dc.identifier | doi:10.1007/s11232-007-0135-8 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194946 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Mathematical Physics | |
| dc.subject | Quantum Algebra | |
| dc.title | Toward logarithmic extensions of ^sl(2)_k conformal field models | |
| dc.type | text |