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Type-I strings on magnetised orbifolds and brane transmutation

PHYSICS LETTERS B, no. 1-2 (2000): 223-232

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In the presence of internal magnetic fields, a D9 brane can acquire a D5 (or anti-D5) R-R charge, and can therefore contribute to the corresponding tadpole. In the resulting vacua, supersymmetry is generically broken and tachyonic instabilities are present. However, suitable choices for the magnetic fields, corresponding to self-dual conf...更多

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