Publications
113 results found
Grana M, Louis J, Sim A, et al., 2009, E7(7) formulation of N=2 backgrounds, JHEP, Vol: 0907, Pages: 104-104
Pacheco PP, Waldram D, 2008, M-theory, exceptional generalised geometry and superpotentials, Journal of High Energy Physics, Vol: 9, ISSN: 1029-8479
We discuss the structure of ``exceptional generalised geometry'' (EGG), an extension of Hitchin's generalised geometry that provides a unified geometrical description of backgrounds in eleven-dimensional supergravity. On a d-dimensional background, as first described by Hull, the action of the generalised geometrical O(d, d) symmetry group is replaced in EGG by the exceptional U-duality group Ed(d). The metric and form-field degrees of freedom combine into a single geometrical object, so that EGG naturally describes generic backgrounds with flux, and there is an EGG analogue of the Courant bracket which encodes the differential geometry. Our focus is on the case of seven-dimensional backgrounds with N = 1 four-dimensional supersymmetry. The corresponding EGG is the generalisation of a G2-structure manifold. We show it is characterised by an element phgr in a particular orbit of the 912 representation of E7(7), which defines an SU(7) ⊂ E7(7) structure. As an application, we derive the generic form of the four-dimensional effective superpotential, and show that it can be written in a universal form, as a homogeneous E7(7)-invariant functional of phgr.
Gauntlett JP, Mac Conamhna OAP, Mateos T, et al., 2008, AdS spacetimes in M-theory, Pages: 2875-2877
Grana M, Louis J, Waldram D, 2007, SU(3) x SU(3) compactification and mirror duals of magnetic fluxes, JHEP, Vol: 0704, Pages: 101-101
Gauntlett JP, Mateos T, Waldram D, et al., 2007, AdS spacetimes in M-theory, Marcel Grossmann Meeting on General Relativity, Pages: 2875-2877
Gauntlett JP, Kim N, Waldram D, 2007, Supersymmetric AdS(3), AdS(2) and Bubble Solutions, JHEP, Vol: 0704, Pages: 005-005
Gauntlett JP, Mac Conamhna OAP, Mateos T, et al., 2006, Supersymmetric AdS(3) solutions of type IIB supergravity, Phys.Rev.Lett., Vol: 97, Pages: 171601-171601
Grana M, Louis J, Waldram D, 2006, Hitchin functionals in N=2 supergravity, JHEP, Vol: 0601, Pages: 008-008
Gauntlett JP, Mac Conamhna OAP, Mateos T, et al., 2006, AdS spacetimes from wrapped M5 branes, JHEP, Vol: 0611, Pages: 053-053
Gauntlett JP, Mac Conamhna OAP, Mateos T, et al., 2006, New supersymmetric AdS(3) solutions, Phys.Rev., Vol: D74, Pages: 106007-106007
Gauntlett JP, Martelli D, Sparks J, et al., 2006, Supersymmetric AdS(5) solutions of type IIB supergravity, Class.Quant.Grav., Vol: 23, Pages: 4693-4718-4693-4718
Gauntlett JP, Martelli D, Sparks JF, et al., 2005, A new infinite class of Sasaki-Einstein manifolds, Arxiv.org, Vol: 8, Pages: 1-12
Gauntlett JP, Lee S, Mateos T, et al., 2005, Marginal deformations of field theories with AdS(4) duals, JHEP, Vol: 0508, Pages: 030-030
Gauntlett JP, Martelli D, Sparks J, et al., 2005, Sasaki-Einstein Metrics on S^2 x S^3, Arxiv.org, Vol: 8, Pages: 1-20, ISSN: 1095-0761
Gauntlett JP, Martelli D, Sparks J, et al., 2005, Supersymmetric AdS backgrounds in string and M-theory, 73rd Meeting of Theoretical Physicists and Mathematicians Strasbourg, FRANCE, SEP 11-13, 2003, Publisher: European Mathematical Society, Pages: 217-252
Gauntlett JP, Martelli D, Sparks J, et al., 2004, Sasaki-Einstein metrics on S<sup>2</sup> × S<sup>3</sup>, Advances in Theoretical and Mathematical Physics, Vol: 8, Pages: 711-734, ISSN: 1095-0761
We present a countably infinite number of new explicit co-homo-geneity one Sasaki-Einstein metrics on S2 × S3 of both quasi-regular and irregular type. These give rise to new solutions of type IIB super-gravity which are expected to be dual to N = 1 superconformal field theories in four dimensions with compact or non-compact R-symmetry and rational or irrational central charges, respectively. © 2004 International Press.
Gauntlett JP, Martelli D, Sparks J, et al., 2004, Supersymmetric AdS(5) solutions of M theory, Class.Quant.Grav., Vol: 21, Pages: 4335-4366
Waldram D, 2004, Introduction to model building in heterotic M-theory, Singapore, School of Theoretical Advanced Study Institute on strings, branes and extra dimensions (TASI 2001), Boulder, CO, 4 - 29 June 2001, Publisher: World Scientific, Pages: 763-850
Gauntlett JP, Martelli D, Pakis S, et al., 2004, G structures and wrapped NS5-branes, Commun.Math.Phys., Vol: 247, Pages: 421-445
Gauntlett JP, Martelli D, Waldram D, 2004, Superstrings with intrinsic torsion, Phys.Rev., Vol: D69, Pages: 086002-086002
Gurrieri S, Louis J, Micu A, et al., 2003, Mirror symmetry in generalized Calabi-Yau compactifications, Nucl.Phys., Vol: B654, Pages: 61-113-61-113
Gauntlett JP, Kim N, Pakis S, et al., 2002, M theory solutions with AdS factors, Class.Quant.Grav., Vol: 19, Pages: 3927-3946-3927-3946
Gauntlett JP, Kim N, Pakis S, et al., 2002, Membranes wrapped on holomorphic curves, Phys.Rev., Vol: D65, Pages: 026003-026003
Marquart M, Waldram D, 2002, F-theory duals of M-theory on $S^1/\bbZ_2\times T^4/\bbZ_N$, Arxiv.org, Pages: 1-19
Donagi R, Ovrut BA, Pantev T, et al., 2001, Standard models from heterotic M theory, Advances in Theoretical and Mathematical Physics, Vol: 5, Pages: 93-137, ISSN: 1095-0761
We present a class of N = 1 supersymmetric models of particle physics, derived directlyfrom heterotic M-theory, that contain three families of chiral quarks and leptonscoupled to the gauge group SU(3)C×SU(2)L×U(1)Y. These models are a fundamentalform of “brane-world” theories, with an observable and hidden sector each confined,after compactification on a Calabi–Yau threefold, to a BPS threebrane separated by afive-dimensional bulk space with size of the order of the intermediate scale. The requirementof three families, coupled to the fundamental conditions of anomaly freedomand supersymmetry, constrains these models to contain additional fivebranes wrappedaround holomorphic curves in the Calabi–Yau threefold. These fivebranes “live” inthe bulk space and represent new, non-perturbative aspects of these particle physicsvacua. We discuss, in detail, the relevant mathematical structure of a class of torus-fibered Calabi–Yau threefolds with non-trivial first homotopy groups and constructholomorphic vector bundles over such threefolds, which, by including Wilson lines,break the gauge symmetry to the standard model gauge group. Rules for constructingphenomenological particle physics models in this context are presented and we give anumber of explicit examples.
Donagi R, Ovrut B, Pantev T, et al., 2001, Standard-model bundles, Advances in Theoretical and Mathematical Physics, Vol: 5, Pages: 563-616, ISSN: 1095-0761
We describe a family of genus one fibered Calabi-Yau threefoldswith fundamental group Z/2. On each Calabi-Yau Z in the family weexhibit a positive dimensional family of Mumford stable bundles whosesymmetry group is the Standard Model group 5C/(3) x SU(2) x U(l)and which have C3 = 6. We also show that for each bundle V in ourfamily, C2(Z) — C2{V) is the class of an effective curve on Z. Theseconditions ensure that Z and V can be used for a phenomenologicallyrelevant compactification of Heterotic M-theory.
Gauntlett JP, Kim N, Martelli D, et al., 2001, Wrapped fivebranes and script N=2 super Yang-Mills theory, Physical Review D, Vol: 64, ISSN: 0556-2821
We construct D = 10 supergravity solutions corresponding to type IIB fivebranes wrapping a two-sphere in a Calabi-Yau twofold. These are related in the IR to the large N limit of pure script N=2 SU(N) super Yang-Mills theory. We show that the singularities in the IR correspond to the wrapped branes being distributed on a ring. We analyze the dynamics of a probe fivebrane and show that it incorporates the full perturbative structure of the gauge theory. For a class of solutions the two-dimensional moduli space is nonsingular and we match the result for the corresponding slice of the Coulomb branch of the gauge theory. ©2001 The American Physical Society.
Gauntlett JP, Kim N, Waldram D, 2001, M-flvebranes wrapped on supersymmetric cycles, Physical Review D, Vol: 63, ISSN: 0556-2821
We construct supergravity solutions dual to the twisted field theories arising when M-theory fivebranes wrap general supersymmetric cycles. The solutions are constructed in maximal D = 7 gauged supergravity and then uplifted to D =11. Our analysis covers Kahler, special Lagrangian and exceptional calibrated cycles. The metrics on the cycles are Einstein, but do not necessarily have constant curvature. We find many new examples of AdS/CFT duality, corresponding to the IR superconformai fixed points of the twisted field theories. ©2001 The American Physical Society.
Gauntlett JP, Martelli D, Waldram D, et al., 2001, Fivebranes wrapped on slag three-cycles and related geometry, Journal of High Energy Physics, Vol: 5, ISSN: 1029-8479
We construct ten-dimensional supergravity solutions corresponding to the near horizon limit of IIB fivebranes wrapping special lagrangian three-cycles of constant curvature. The case of branes wrapping a three-sphere provides a gravity dual of pure N = 2 super-Yang-Mills theory in D = 3. The non-trivial part of the solutions are seven manifolds that admit two G2 structures each of which is covariantly constant with respect to a different connection with torsion. We derive a formula for the generalised calibration for this general class of solutions. We discuss analogous aspects of the geometry that arises when fivebranes wrap other supersymmetric cycles which lead to Spin (7) and SU (AT) structures. In some cases there are two covariantly constant structures and in others one.
Donagi R, Ovrut BA, Pantev T, et al., 2001, Standard models from heterotic M-theory, Advances in Theoretical and Mathematical Physics, Vol: 5, Pages: 93-137, ISSN: 1095-0761
We present a class of N = 1 supersymmetric models of particle physics, derived directly from heterotic M-theory, that contain three families of chiral quarks and leptons coupled to the gauge group SU(3)C×SU(2)L×U(1)Y. These models are a fundamental form of "brane-world" theories, with an observable and hidden sector each confined, after compactification on a Calabi-Yau threefold, to a BPS threebrane separated by a five-dimensional bulk space with size of the order of the intermediate scale. The requirement of three families, coupled to the fundamental conditions of anomaly freedom and supersymmetry, constrains these models to contain additional fivebranes wrapped around holomorphic curves in the Calabi-Yau threefold. These fivebranes "live" in the bulk space and represent new, non-perturbative aspects of these particle physics vacua. We discuss, in detail, the relevant mathematical structure of a class of torus-fibered Calabi-Yau threefolds with non-trivial first homotopy groups and construct holomorphic vector bundles over such threefolds, which, by including Wilson lines, break the gauge symmetry to the standard model gauge group. Rules for constructing phenomenological particle physics models in this context are presented and we give a number of explicit examples.
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