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/J2. 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