## Abstract

A zero-brane is used to probe non-threshold BPS bound states of (p, p + 2, p + 4)-branes. At long distances the string calculations agree with the supergravity calculations. The supergravity description is given, using the interpretation of the D = 8 dyonic membrane as the bound state of a two-brane inside a four-brane. We investigate the short distance structure of these bound states, compute the phase shift of the scattered zero-brane and find the bound states' characteristic size. It is found that there should be a supersymmetric solution of type IIa supergravity, describing a bound state of a zero-brane and two orthogonal two-branes, all inside a four-brane, with an additional unbound zero-brane. We comment on the relationship between p-branes and (p - 2)-branes.

Original language | English |
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Pages (from-to) | 283-297 |

Number of pages | 15 |

Journal | Nuclear Physics B |

Volume | 499 |

Issue number | 1-2 |

DOIs | |

State | Published - 18 Aug 1997 |

Externally published | Yes |

### Bibliographical note

Funding Information:* This work was supported in part by the National Science Foundation grant PHY-9315811. 1 E-mail: [email protected] 2 All these states should form an algebra, which may elucidate some underlying structure of string theory \[51.

## ASJC Scopus subject areas

- Nuclear and High Energy Physics