Absorption of dilaton partial waves by D3-branes
May, 199924 pages
Published in:
- Nucl.Phys.B 560 (1999) 207-229
e-Print:
- hep-th/9905174 [hep-th]
Report number:
- PUPT-1865,
- MIT-CTP-2866
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Abstract:
We calculate the leading term in the low-energy absorption cross section for an arbitrary partial wave of the dilaton field by a stack of many coincident D3-branes. We find that it precisely reproduces the semiclassical absorption cross section of a 3-brane geometry, including all numerical factors. The crucial ingredient in making the correspondence is the identification of the precise operators on the D3-brane world-volume which couple to the dilaton field and all its derivatives. The needed operators are related through T-duality and the IIA/M-theory correspondence to the recently determined M(atrix) theory expressions for multipole moments of the 11D supercurrent. These operators have a characteristic symmetrized trace structure which plays a key combinatorial role in the analysis for the higher partial waves. The results presented here give new evidence for an infinite family of non-renormalization theorems which are believed to exist for two-point functions in gauge theory in four dimensions.Note:
- 24 pages, LaTeX Report-no: PUPT-1865, MIT-CTP-2866
- 11.15.-q
- 11.25.-w
- 04.70.Dy
- D-branes
- Black holes
- membrane model: D-brane
- coupling: dilaton
- partial wave
- cross section: absorption
- approximation: semiclassical
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