| 1. |
- Dibitetto, Giuseppe, et al.
(författare)
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AdS(2) x S-7 solutions from D0-F1-D8 intersections
- 2018
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Ingår i: Journal of High Energy Physics (JHEP). - 1126-6708 .- 1029-8479. ; :10
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Tidskriftsartikel (refereegranskat)abstract
- We study an exhaustive analytic class of massive type IIA backgrounds pre-serving sixteen real supercharges and enjoying SL(2, ) x SO(8) bosonic symmetry. The corresponding geometry is described by AdS(2) x S-7 warped over a line, which turns out to emerge from taking the near-horizon limit of D0-F1-D8 intersections. By studying the singularity structure of these solutions we find the possible presence of localized O8/D8 sources, as well as of fundamental strings smeared over the S-7. Finally we discuss the relation between the aforementioned solutions and the known AdS(7) x S-2 class through double analytic continuation.
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| 2. |
- Dibitetto, Giuseppe, et al.
(författare)
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AdS3 solutions with exceptional supersymmetry
- 2018
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Ingår i: Fortschritte der Physik. - : Wiley. - 0015-8208 .- 1521-3978. ; 66:10
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Tidskriftsartikel (refereegranskat)abstract
- Among the possible superalgebras that contain the AdS3 isometries, two interesting possibilities are the exceptional F (4) and G(3). Their R-symmetry is respectively SO(7) and G(2), and the amount of supersymmetry N = 8 and N = 7. We find that there exist two (locally) unique solutions in type IIA supergravity that realize these superalgebras, and we provide their analytic expressions. In both cases, the internal space is obtained by a round six-sphere fibred over an interval, with an O8-plane at one end. The R-symmetry is the symmetry group of the sphere; in the G(3) case, it is broken to G(2) by fluxes. We also find several numerical N = 1 solutions with G(2) flavor symmetry, with various localized sources, including O2-planes and O8-planes.
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| 3. |
- Hosseini, Seyed Morteza, et al.
(författare)
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6D attractors and black hole microstates
- 2018
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Ingår i: Journal of High Energy Physics (JHEP). - 1126-6708 .- 1029-8479. ; :12
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Tidskriftsartikel (refereegranskat)
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| 4. |
- Passias, Achilleas, et al.
(författare)
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A massive class of N=2 AdS(4) IIA solutions
- 2018
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Ingår i: Journal of High Energy Physics (JHEP). - : SPRINGER. - 1126-6708 .- 1029-8479. ; :10
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Tidskriftsartikel (refereegranskat)abstract
- We initiate a classification of N = 2 supersymmetric AdS4 solutions of (massive) type IIA supergravity. The internal space is locally equipped with either an SU(2) or an identity structure. We focus on the SU(2) structure and determine the conditions it satisfies, dictated by supersymmetry. Imposing as an Ansatz that the internal space is complex, we reduce the problem of finding solutions to a Riccati ODE, which we solve analytically. We obtain in this fashion a large number of new families of solutions, both regular as well as with localized O8-planes and conical Calabi-Yau singularities. We also recover many solutions already discussed in the literature.
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| 5. |
- Passias, Achilleas, et al.
(författare)
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N=2 supersymmetric AdS(4) solutions of type IIB supergravity
- 2018
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Ingår i: Journal of High Energy Physics (JHEP). - : SPRINGER. - 1126-6708 .- 1029-8479. ; :4
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Tidskriftsartikel (refereegranskat)abstract
- We analyze general N = 2 supersymmetric AdS(4) solutions of type IIB super gravity. Utilizing a set of pure spinor equations directly adapted to N = 2, the necessary and sufficient conditions for supersymmetry are reduced to a concise system of partial differential equations for two functions which determine the solutions. We show that using this system analytic solutions can be generated, thus potentially expanding the rather limited set of known AdS(4) solutions in type IIB supergravity.
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| 6. |
- Passias, Achilleas, et al.
(författare)
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Perturbing AdS(6) x S-w(4) : linearised equations and spin-2 spectrum
- 2018
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Ingår i: Journal of High Energy Physics (JHEP). - : SPRINGER. - 1126-6708 .- 1029-8479. ; :7
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Tidskriftsartikel (refereegranskat)abstract
- We initiate the analysis of the Kaluza-Klein mass spectrum of massive IIA supergravity on the warped AdS(6) x S-w(4) background, by deriving the linearised equations of motion of bosonic and fermionic fl uctuations, and determining the mass spectrum of those of spin-2. The spin-2 modes are given in terms of hypergeometric functions and a careful analysis of their boundary conditions uncovers the existence of two branches of mass spectra, bounded from below. The modes that saturate the bounds belong to short multiplets which we identify in the representation theory of the f (4) symmetry superalgebra of the AdS(6) x S-w(4) solution.
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