Abstract
We simplify the equations of motion of five-dimensional ungauged supergravity coupled to three U(1) gauge fields using a floating-brane Ansatz in which the electric potentials are directly related to the gravitational warp factors. We find a new class of non-BPS solutions, that can be obtained linearly starting from an Euclidean four-dimensional Einstein-Maxwell base. This class – the largest known so far – reduces to the BPS and almost-BPS solutions in certain limits. We solve the equations explicitly when the base space is given by the Israel-Wilson metric, and obtain solutions describing non-BPS D6 and anti-D6 branes kept in equilibrium by flux. We also examine the action of spectral flow on solutions with an Israel-Wilson base and show that it relates these solutions to almost-BPS solutions with a Gibbons-Hawking base.
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Bena, I., Giusto, S., Ruef, C. et al. Supergravity solutions from floating branes. J. High Energ. Phys. 2010, 47 (2010). https://doi.org/10.1007/JHEP03(2010)047
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DOI: https://doi.org/10.1007/JHEP03(2010)047