Positronium-like states from supergravity

Details Positronium-like states from supergravity Positronium-like states from supergravity

2009-04-20

arxiv.org/abs/0904.2879v2

Nucl.Phys.B822:219-229,2009

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 6 figures, Minor corrections and added references

Scientific paper

10.1016/j.nuclphysb.2009.07.014

We study semi-classical rotating open strings ending on a probe Dp-brane close to a stack of extremal, non-extremal Dp-branes and Dp-branes with $B$-fields. These states may be interpreted as positronium-like bound states of spinning W-bosons in an $SU(N+1) \to SU(N) \times U(1)$ theory. In each case, we describe the behaviour of the strings and examine the relation between the energy and the angular momentum of the bound state.

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