Magnetic moments of branes and giant gravitons

Sumit R. Das, Sandip P. Trivedi, Sachindeo Vaidya

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


We study the magnetic analogue of Myers' Dielectric Effect and, in some cases, relate it to the blowing up of particles into branes, first investigated by Greevy, Susskind and Toumbas. We show that D0-branes or gravitons in M-theory, moving in a magnetic four-form field strength background expand into a non-commutative two sphere. Both examples of constant magnetic field and non-constant fields in curved backgrounds generated by branes are considered. We find, in all cases, another solution, consisting of a two-brane wrapping a classical two-sphere, which has all the quantum numbers of the DO-branes. Motivated by this, we investigate the blowing up of gravitons into branes in backgrounds different from AdSm x Sn. We find the phenomenon is quite general. In many cases with less or even no supersymmetry we find a brane configuration which has the same quantum numbers and the same energy as a massless particle in supergravity.

Original languageEnglish
Pages (from-to)16-28
Number of pages13
JournalJournal of High Energy Physics
Issue number10 PART B
StatePublished - 2000


  • AdS/CFT Correspondance
  • Black Holes in String Theory
  • D-branes
  • M-Theory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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