We study the classical geometry produced by a stack of stable (i.e., tachyon-free) non-BPS D-branes present in K3 compactifications of type IT string theory. This classical representation is derived by solving the equations of motion describing the low-energy dynamics of the supergravity fields which couple to the non-BPS state. Differently from what expected, this configuration displays a singular behaviour: the space-time geometry has a repulson-like singularity This fact suggests that the simplest setting, namely a set of coinciding non-interacting D-branes, is not acceptable. We finally discuss the possible existence of other acceptable configurations corresponding to more complicated bound states of these non-BPS branes.
Is a classical description of stable nonBPS D-branes possible? / Bertolini, M.; Di, Vecchia; Frau, M.; Lerda, A.; Marotta, R.; Russo, R.. - In: NUCLEAR PHYSICS. B. - ISSN 0550-3213. - 590:3(2000), pp. 471-503. [10.1016/S0550-3213(00)00558-7]
Is a classical description of stable nonBPS D-branes possible?
Bertolini M.;
2000-01-01
Abstract
We study the classical geometry produced by a stack of stable (i.e., tachyon-free) non-BPS D-branes present in K3 compactifications of type IT string theory. This classical representation is derived by solving the equations of motion describing the low-energy dynamics of the supergravity fields which couple to the non-BPS state. Differently from what expected, this configuration displays a singular behaviour: the space-time geometry has a repulson-like singularity This fact suggests that the simplest setting, namely a set of coinciding non-interacting D-branes, is not acceptable. We finally discuss the possible existence of other acceptable configurations corresponding to more complicated bound states of these non-BPS branes.File | Dimensione | Formato | |
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