@article{4ad5fec0bc12454aa043d7ba7feef139, title = "Homogeneous M2 duals", abstract = "Motivated by the search for new gravity duals to M2 branes with N > 4 supersymmetry — equivalently, M-theory backgrounds with Killing superalgebra osposp(N |4) for N > 4 — we classify (except for a small gap) homogeneous M-theory backgrounds with symmetry Lie algebra soso(n) ⊕ soso(3, 2) for n = 5, 6, 7. We find that there are no new backgrounds with n = 6, 7 but we do find a number of new (to us) backgrounds with n = 5. All backgrounds are metrically products of the form AdS4 × P 7, with P riemannian and homogeneous under the action of SO(5), or S 4 × Q 7 with Q lorentzian and homogeneous under the action of SO(3,2). At least one of the new backgrounds is supersymmetric (albeit with only N = 2) and we show that it can be constructed from a supersymmetric Freund-Rubin background via a Wick rotation. Two of the new backgrounds have only been approximated numerically.", author = "Jose Figueroa-O'Farrill and Mara Ungureanu", year = "2016", month = jan, day = "25", doi = "10.1007/JHEP01(2016)150", language = "English", volume = "2016", journal = "Journal of High Energy Physics", issn = "1126-6708", publisher = "Springer-Verlag", number = "1", }