Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-07-16
Int.J.Mod.Phys.A13:2165-2178,1998; Erratum-ibid.A13:4777,1998
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX file,17 pages, few misprints and mistakes are corrected
Scientific paper
10.1142/S0217751X98000974
We discuss the one-loop effective potential and static (large $d$) potential for toroidal D-brane described by DBI-action in constant magnetic and in constant electric fields. Explicit calculation is done for membrane case ($p=2$) for both types of external fields and in case of static potential for an arbitrary $p$. In the case of one-loop potential it is found that the presence of magnetic background may stabilize D-brane giving the possibility for non-pointlike ground state configuration. On the same time, constant electrical field acts against stabilization and the correspondent one-loop potential is unbounded from below. The properties of static potential which also has stable minimum are described in detail. The back-reaction of quantum gauge fields to one-loop potential is also evaluated.
Nojiri Shin'ichi
Odintsov Sergei D.
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