Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-08-26
JHEP 0010 (2000) 037
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, no figures, harvmac
Scientific paper
10.1088/1126-6708/2000/10/037
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 $D0$ branes. Motivated by this, we investigate the blowing up of gravitons into branes in backgrounds different from $AdS_m \times S^n$. 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.
Das Sumit R.
Trivedi S. P. .
Vaidya Sachindeo
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