Abstract

We study Lunin-Maldacena deformations of cosmological backgrounds of $D=11$ supergravity which gives an easy way to generate solutions with nonzero 4-form flux starting from solutions of pure Einstein equations which possess at least three $U(1)$ isometries. We illustrate this on the vacuum S-brane solution from which the usual SM2-brane solution is obtained. Applying the method again, one either gets the recently found S-brane system where a contribution of the Chern-Simons term to field equations is nonzero or the $\mathrm{SM}2\ensuremath{\perp}\mathrm{SM}2(0)$ intersection, depending on which $U(1)$ directions are used during the process. Repeated usage of the procedure gives rise to configurations with several overlapping S-branes, some of which are new. We also employ this method to construct two more new solutions and make comments about accelerating cosmologies that follow from such deformed solutions after compactification to ($1+3$) dimensions.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.