### Abstract

It has recently been observed that IIb string theory in the pp-wave background can be used to calculate certain quantities, such as the dimensions of BMN operators, as exact functions of the effective coupling λ′ = λ/J^{2}. These functions interpolate smoothly between the weak and strong effective coupling regimes of N = 4 SYM theory at large R charge J. In this Letter we use the pp-wave superstring field theory of hep-th/0204146 to study more complicated observables. The expansion of the three-string interaction vertex suggests more complicated interpolating functions which in general give rise to fractional powers of λ′ in physical observables at weak effective coupling.

Original language | English (US) |
---|---|

Pages (from-to) | 111-118 |

Number of pages | 8 |

Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |

Volume | 548 |

Issue number | 1-2 |

DOIs | |

State | Published - Nov 14 2002 |

### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

## Fingerprint Dive into the research topics of 'New effects in gauge theory from pp-wave superstrings'. Together they form a unique fingerprint.

## Cite this

*Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics*,

*548*(1-2), 111-118. https://doi.org/10.1016/S0370-2693(02)02841-1