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Lectures on on black holes, topological strings and quantum attractors (2.0 (2006)

by B Pioline
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Non-supersymmetric Black Holes and Topological Strings

by Kirill Saraikin, Cumrun Vafa , 2007
"... We study non-supersymmetric, extremal 4 dimensional black holes which arise upon compactification of type II superstrings on Calabi-Yau threefolds. We propose a generalization of the OSV conjecture for higher derivative corrections to the non-supersymmetric black hole entropy, in terms of the one pa ..."
Abstract - Cited by 18 (1 self) - Add to MetaCart
We study non-supersymmetric, extremal 4 dimensional black holes which arise upon compactification of type II superstrings on Calabi-Yau threefolds. We propose a generalization of the OSV conjecture for higher derivative corrections to the non-supersymmetric black hole entropy, in terms of the one parameter refinement of topological string introduced by Nekrasov. We also study the attractor mechanism for non-supersymmetric black holes and show how the inverse problem of fixing charges in terms of the attractor value of CY moduli can be explicitly solved.
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... of D-brane BPS states on compact and non-compact Calabi-Yau manifolds, and gave new insights on the topological strings and quantum cosmology. For a recent review and references on this subject, see =-=[21]-=-. Define a mixed partition function for a black hole with magnetic charge pI and electric potential φI by ZBH(p I , φI) = ∑ qI Ω(pI , qI) e −φIqI , (1.1) where Ω(pI , qI) represent supersymmetric blac...

Lectures on Spectrum Generating Symmetries and U-duality in Supergravity, Extremal Black Holes, Quantum Attractors and Harmonic Superspace

by Murat Günaydin , 908
"... Abstract: We review the underlying algebraic structures of supergravity theories with symmetric scalar manifolds in five and four dimensions, orbits of their extremal black hole solutions and the spectrum generating extensions of their U-duality groups. For 5D, N = 2 Maxwell-Einstein supergravity th ..."
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Abstract: We review the underlying algebraic structures of supergravity theories with symmetric scalar manifolds in five and four dimensions, orbits of their extremal black hole solutions and the spectrum generating extensions of their U-duality groups. For 5D, N = 2 Maxwell-Einstein supergravity theories (MESGT) defined by Euclidean Jordan algebras,J, the spectrum generating symmetry groups are the conformal groups Conf(J) of J which are isomorphic to their U-duality groups in four dimensions. Similarly, the spectrum generating symmetry groups of 4D, N = 2 MESGTs are the quasiconformal groups QConf(J) associated with J that are isomorphic to their U-duality groups in three dimensions. We then review the work on spectrum generating symmetries of spherically symmetric stationary 4D BPS black holes, based on the equivalence of their attractor equations and the equations for geodesic motion of a fiducial particle on the target spaces of corresponding 3D supergravity theories obtained by timelike reduction. We also discuss the connection between harmonic superspace formulation of 4D, N = 2 sigma models coupled to supergravity and the minimal unitary representations of their isometry groups obtained by quantizing their quasiconformal realizations. We discuss the relevance of this connection to spectrum generating symmetries

Freudenthal triple classification of three-qubit entanglement

by L. Borsten, D. Dahanayake, M. J. Duff, W. Rubens, H. Ebrahim , 2009
"... We show that the three-qubit entanglement classes: (0) Null, (1) Separable A-B-C, (2a) Biseparable A-BC, (2b) Biseparable B-CA, (2c) Biseparable C-AB, (3) W and (4) GHZ correspond respectively to ranks 0, 1, 2a, 2b, 2c, 3 and 4 of a Freudenthal triple system defined over the Jordan algebra C ⊕ C ⊕ C ..."
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We show that the three-qubit entanglement classes: (0) Null, (1) Separable A-B-C, (2a) Biseparable A-BC, (2b) Biseparable B-CA, (2c) Biseparable C-AB, (3) W and (4) GHZ correspond respectively to ranks 0, 1, 2a, 2b, 2c, 3 and 4 of a Freudenthal triple system defined over the Jordan algebra C ⊕ C ⊕ C. We also compute the corresponding SLOCC orbits.
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...n Table 2 have previously entered the physics literature through “magic” and extended supergravities [38, 39, 40], and their ranks through the classification of the corresponding black hole solutions =-=[41, 42, 43]-=-. Indeed, although it is logically independent of it, the present work was inspired by the black-hole/qubit correspondence [44, 45, 46, 47, 48, 49, 50, 43, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 31]....

Cargèse lectures on string theory with eight supercharges

by Monica Guica, Andrew Strominger - PROC. SUPPL. 171, 39 (2007) , 2007
"... These lectures give an introduction to the interrelated topics of Calabi-Yau compactification of the type II string, black hole attractors, the all-orders entropy formula, the dual (0,4) CFT, topological strings and the OSV conjecture. Based on notes by MG of lectures by AS at the 2006 Cargèse summe ..."
Abstract - Cited by 11 (0 self) - Add to MetaCart
These lectures give an introduction to the interrelated topics of Calabi-Yau compactification of the type II string, black hole attractors, the all-orders entropy formula, the dual (0,4) CFT, topological strings and the OSV conjecture. Based on notes by MG of lectures by AS at the 2006 Cargèse summer school.
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...ges, aimed at the student preparing for research in this area, and building up to a discussion of the OSV conjecture in the last section. For excellent and recent reviews at a more advanced level see =-=[7,8]-=-. We begin in lecture 2 with the basics of Type II Calabi-Yau compactification, BPS black holes, attractors, and their CFT duals. In lecture 3 we give a brief introduction to the topological string. I...

5d black holes and strings with higher derivatives

by Ra Castro, Joshua L. Davis, Per Kraus, Finn Larsen
"... We find asymptotically flat black hole and string solutions to 5D supergravity in the presence of higher derivative terms. In some cases, including the fundamental heterotic string solution, the higher derivative terms smooth out naked singularities into regular geometries carrying zero entropy. We ..."
Abstract - Cited by 10 (2 self) - Add to MetaCart
We find asymptotically flat black hole and string solutions to 5D supergravity in the presence of higher derivative terms. In some cases, including the fundamental heterotic string solution, the higher derivative terms smooth out naked singularities into regular geometries carrying zero entropy. We also compute corrections to the entropy of 5D Calabi-Yau black holes, and discuss the relation to previous results.
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...roscopic descriptions of black holes in string theory. The program of including R 2 corrections in 4D supergravity has received much attention over the past few years [1,2,3,4,5,6,7] (for reviews see =-=[8,9,10]-=-). By contrast, the relevant 5D supergravity action was constructed only very recently, as the supersymmetric completion of a certain mixed gauge/gravitational Chern-Simons term [11]. The 5D theory ca...

1/8 BPS black hole composites

by Guillaume Bossard
"... ar ..."
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...ity theories defining effective theories of string theory compactifications on a six-dimensional manifold are of prime importance for the understanding of non-perturbative properties of string theory =-=[1]-=-. In particular, the derivation of BPS multi-black hole solutions within N = 2 supergravity defining bound states of the theory has permitted to explain the mismatch between the enumeration of spheric...

String Theory Effects on Five-Dimensional Black Hole Physics

by Alejandra Castro, Joshua L. Davis, Per Kraus, Finn Larsen , 2008
"... We review recent developments in understanding quantum/string corrections to BPS black holes and strings in five-dimensional supergravity. These objects are solutions to the effective action obtained from M-theory compactified on a Calabi-Yau threefold, including the one-loop corrections determined ..."
Abstract - Cited by 8 (0 self) - Add to MetaCart
We review recent developments in understanding quantum/string corrections to BPS black holes and strings in five-dimensional supergravity. These objects are solutions to the effective action obtained from M-theory compactified on a Calabi-Yau threefold, including the one-loop corrections determined by anomaly cancellation and supersymmetry. We introduce the off-shell formulation of this theory obtained through the conformal supergravity method and review the methods for investigating supersymmetric solutions. This leads to quantum/string corrected attractor geometries, as well as asymptotically flat black strings and spinning black holes. With these solutions in hand, we compare our results with analogous studies in four-dimensional string-corrected supergravity, emphasizing the distinctions between the four and five dimensional theories.
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...can be computed from the special geometry constraint (13). In particular, if we define the dual charges q I through then ℓA = 1 2 Q1/2 with k qI = 1 2 cIJKq J q K , (44) Q 3/2 = 1 6 cIJKq I q J q K . =-=(45)-=- The entropy is S = 2π √ Q 3 . Finding explicit expressions in terms of the charges qI requires that the equation (44) can be inverted to find q I , but this is only possible for special choices of cI...

WIS/05/08-FEB-DPP 5D Black Holes and Non-linear Sigma Models

by Micha Berkooz, Boris Pioline , 802
"... Abstract: Stationary solutions of 5D supergravity with U(1) isometry can be efficiently studied by dimensional reduction to three dimensions, where they reduce to solutions to a locally supersymmetric non-linear sigma model. We generalize this procedure to 5D gauged supergravity, and identify the co ..."
Abstract - Cited by 5 (1 self) - Add to MetaCart
Abstract: Stationary solutions of 5D supergravity with U(1) isometry can be efficiently studied by dimensional reduction to three dimensions, where they reduce to solutions to a locally supersymmetric non-linear sigma model. We generalize this procedure to 5D gauged supergravity, and identify the corresponding gauging in 3D. We pay particular attention to the case where the Killing spinor is non constant along the fibration, which results, even for ungauged supergravity in 5D, in an additional gauging in 3D, without introducing any extra potential. We further study SU(2) × U(1) symmetric solutions, which correspond to geodesic motion on the sigma model (with potential in the gauged case). We identify and study the algebra of BPS constraints relevant for the Breckenridge-Myers-Peet-Vafa black hole, the Gutowski-Reall black hole and several other BPS solutions, and obtain the corresponding radial wave functions in the semi-classical approximation. Unité mixte de recherche du CNRS UMR 7589 Unité mixte de recherche du CNRS UMR 8549Contents

Lectures on Mirror Symmetry and Topological String Theory

by Murad Alim - Open Problems and Surveys of Contemporary Mathematics
"... These are notes of a series of lectures on mirror symmetry and topological string theory given at the Mathematical Sciences Center at Tsinghua University. The N = 2 superconformal algebra, its deformations and its chiral ring are reviewed. A topological field theory can be constructed whose observab ..."
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These are notes of a series of lectures on mirror symmetry and topological string theory given at the Mathematical Sciences Center at Tsinghua University. The N = 2 superconformal algebra, its deformations and its chiral ring are reviewed. A topological field theory can be constructed whose observables are only the elements of the chiral ring. When coupled to gravity, this leads to topological string theory. The identification of the topological string A- and B-models by mirror symmetry leads to surprising connections in mathematics and provides tools for exact computations as well as new insights in physics. A recursive construction of the higher genus amplitudes of topological string theory expressed as polynomials is reviewed. 1 ar
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... at g = 0, 1 need separate treatment, in particular F0 denotes the prepotential and can be calculated from the geometry of the deformation bundle. 9More details on topological strings can be found in =-=[9, 37, 38, 39, 40, 36, 41]-=-. 10It is assumed that h2,0(Z) = 0 . 14 with αa ∈ H3(Z∗). The appropriate choice of coordinates on the moduli space of complex structures as well as the normalization of Ω̃ is determined by the geomet...

Black holes admitting a Freudenthal dual

by L. Borsten, D. Dahanayake, M. J. Duff, W. Rubens , 903
"... The quantised charges x of four dimensional stringy black holes may be assigned to elements of an integral Freudenthal triple system whose automorphism group is the corresponding U-duality and whose U-invariant quartic norm ∆(x) determines the lowest order entropy. Here we introduce a Freudenthal du ..."
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The quantised charges x of four dimensional stringy black holes may be assigned to elements of an integral Freudenthal triple system whose automorphism group is the corresponding U-duality and whose U-invariant quartic norm ∆(x) determines the lowest order entropy. Here we introduce a Freudenthal duality x → ˜x, for which ˜x = −x. Although distinct from U-duality it nevertheless leaves ∆(x) invariant. However, the requirement that ˜x be integer restricts us to the subset of black holes for which ∆(x) is necessarily a perfect square. The issue of higher-order corrections remains open as some, but not all, of the discrete U-duality invariants are Freudenthal invariant. Similarly, the quantised charges A of five dimensional black holes and strings may be assigned to elements of an integral Jordan algebra, whose cubic norm N(A) determines the lowest order entropy. We introduce an analogous Jordan dual A ⋆ , with N(A) necessarily a perfect cube, for which A ⋆ ⋆ = A and which leaves N(A) invariant. The two dualities
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...mensional supergravities that arise from string and M-theory, such as the N = 2 STU, N = 2 “magic”, N = 4 heterotic and N = 8 M/Type II, may all be described by a Freudenthal triple system (FTS) M(J) =-=[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]-=-, where J is a cubic Jordan algebra underlying the corresponding 5D supergravity [3, 11, 12]. The corresponding continuous U-duality is given by the automorphism group Aut(M(J)), e.g. E 7(7) in the ca...

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