On the stringy nature of winding modes in noncommutative thermal field theories

Apr, 2000
24 pages
Published in:
  • JHEP 06 (2000) 038
e-Print:
Report number:
  • CERN-TH-2000-114,
  • DFTT-15-2000,
  • SPIN-2000-13,
  • UB-ECM-PF-00-06,
  • ITFA-2000-08

Citations per year

20002005201020152020051015
Abstract:
We show that thermal noncommutative field theories admit a version of `channel duality' reminiscent of open/closed string duality, where non-planar thermal loops can be replaced by an infinite tower of tree-level exchanges of effective fields. These effective fields resemble closed strings in three aspects: their mass spectrum is that of closed-string winding modes, their interaction vertices contain extra moduli, and they can be regarded as propagating in a higher-dimensional `bulk' space-time. In noncommutative models that can be embedded in a D-brane, we show the precise relation between the effective `winding fields' and closed strings propagating off the D-brane. The winding fields represent the coherent coupling of the infinite tower of closed-string oscillator states. We derive a sum rule that expresses this effective coupling in terms of the elementary couplings of closed strings to the D-brane. We furthermore clarify the relation between the effective propagating dimension of the winding fields and the true codimension of the D-brane.
  • differential geometry: noncommutative
  • phi**n model: 4
  • duality
  • perturbation theory: higher-order
  • Feynman graph: planar
  • string: open
  • string: closed
  • finite temperature