α′-Corrections to extremal dyonic black holes in heterotic string theory

Sahoo, Bindusar; Sen, Ashoke

doi:10.1088/1126-6708/2007/01/010

Cited by 68 publications

(157 citation statements)

References 33 publications

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“…The same notations were also adopted in [40] for the calculation of stringy corrections. Our conventions are different in two minor aspects which are still worth mentioning.…”

Section: Jhep11(2010)064mentioning

confidence: 99%

“…Since the black hole does not carry any momentum modes along the torus, there is a consistent truncation at tree level where all the Kaluza-Klein modes carrying momentum can be set to zero. These arguments were given in the study of black hole entropy 13 [40].…”

Section: Stringy Correctionsmentioning

confidence: 99%

“…As was pointed out in [40] one cannot apply directly the Wald formula (and as a consequence the entropy function formalism) to the action (2.22) because the ChernSimons 3-form cannot be rewritten in a manifestly covariant form (in other words it doesn't depend on the Riemann tensor explicitly). The way to deal with the Chern-Simons term was explained in [47].…”

Section: Jhep11(2010)064mentioning

confidence: 99%

“…A new 4d action obtained this way is manifestly covariant and the application of the entropy function formalism is now straightforward. 14 For the four-derivative action (2.22) the entropy function is [40]:…”

Section: Jhep11(2010)064mentioning

confidence: 99%

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Stringy effects in black hole decay

Kuperstein

Murthy

2010

J. High Energ. Phys.

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We compute the low energy decay rates of near-extremal three(four) charge black holes in five(four) dimensional N = 4 string theory to sub-leading order in the large charge approximation. This involves studying stringy corrections to scattering amplitudes of a scalar field off a black hole. We adapt and use recently developed techniques to compute such amplitudes as near-horizon quantities. We then compare this with the corresponding calculation in the microscopic configuration carrying the same charges as the black hole. We find perfect agreement between the microscopic and macroscopic calculations; in the cases we study, the zero energy limit of the scattering cross section is equal to four times the Wald entropy of the black hole.

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“…The same notations were also adopted in [40] for the calculation of stringy corrections. Our conventions are different in two minor aspects which are still worth mentioning.…”

Section: Jhep11(2010)064mentioning

confidence: 99%

Section: Stringy Correctionsmentioning

confidence: 99%

Section: Jhep11(2010)064mentioning

confidence: 99%

Section: Jhep11(2010)064mentioning

confidence: 99%

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Stringy effects in black hole decay

Kuperstein

Murthy

2010

J. High Energ. Phys.

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“…However, instead of using this generalised formula, we shall handle Chern-Simons terms in a more direct and quicker way developed in [25].…”

Section: Pos(bhs Gr and Strings)033mentioning

confidence: 99%

Heterotic black holes

Prester¹

2009

Proceedings of Black Holes in General Relativity and String Theory — PoS(BHs, GR and Strings)

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Five‐dimensional black holes in heterotic string theory

Cvitan

Prester

Ficnar

et al. 2008

Fortschritte der Physik

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We review recent results on near-horizon static black hole solutions and entropy in R 2 -corrected N = 2 SUGRA in D = 5, focusing on actions connected to heterotic string compactified on K3×S 1 . Comparison with α ′ -perturbative results, results obtained by using simple Gauss-Bonnet R 2 -correction, OSV conjecture and microscopic stringy description (for small black holes) shows that situation in D = 5 is, in a sense, even more interesting then in D = 4.Copyright line will be provided by the publisher 1 5-dimensional black holes in higher derivative N = 2 SUGRA Bosonic part of the Lagrangian for the N = 2 supergravity action in five dimensions is given bywhere A 2 = A α i ab A i ab α and v 2 = v ab v ab . Also,A bosonic field content of the theory is the following. We have Weyl multiplet which contains the fünfbein e a µ , the two-form auxiliary field v ab , and the scalar auxiliary field D. There are n V vector multiplets enumerated by I = 1, . . . , n V , each containing the one-form gauge field A I (with the two-form field strength F I = dA I ), and the scalar M I . Scalar fields A i α , which are belonging to the hypermultiplet, can be gauge fixed and the convenient choice is given by A 2 = −2, ∂ a A α i = 0. Lagrangian (1) can be obtained from 11-dimensional SUGRA by compactifying on six-dimensional Calabi-Yau spaces. Then M I have interpretation as moduli (volumes of (1, 1)-cycles), and c IJK as intersection numbers. Condition N = 1 is a condition of real special geometry.

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α′-Corrections to extremal dyonic black holes in heterotic string theory

Cited by 68 publications

References 33 publications

Stringy effects in black hole decay

Stringy effects in black hole decay

Heterotic black holes

Five‐dimensional black holes in heterotic string theory

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