Portal de Periódicos da CAPES

Twist-nontwist correlators in M N / S N orbifold CFTs

2013; American Physical Society; Volume: 87; Issue: 10 Linguagem: Inglês

10.1103/physrevd.87.106008

1550-7998

Benjamin A. Burrington, Amanda W. Peet, Ida G. Zadeh,

Quantum Chromodynamics and Particle Interactions

We consider general 2D orbifold CFTs of the form ${M}^{N}/{S}_{N}$, with $M$ a target space manifold and ${S}_{N}$ the symmetric group, and generalize the Lunin-Mathur covering space technique in two ways. First, we consider excitations of twist operators by modes of fields that are not twisted by that operator, and show how to account for these excitations when computing correlation functions in the covering space. Second, we consider nontwist sector operators and show how to include the effects of these insertions in the covering space. We work two examples, one using a simple bosonic CFT, and one using the D1-D5 CFT at the orbifold point. We show that the resulting correlators have the correct form for a 2D CFT.