The Young modulus of black strings and the fine structure of blackfolds

Jácome Saldanha N de O B Armas; Joan Camps; Troels Harmark; Niels Anne Jacob Obers

doi:10.1007/jhep02(2012)110

The Young modulus of black strings and the fine structure of blackfolds

Jácome Saldanha N de O B Armas, Joan Camps, Troels Harmark, Niels Anne Jacob Obers

Teoretisk højenergi, astropartikel og gravitationel fysik

30 Citationer (Scopus)

Abstract

We explore corrections in the blackfold approach, which is a worldvolume theory capturing the dynamics of thin black branes. The corrections probe the fine structure of the branes, going beyond the approximation in which they are infinitely thin, and account for the dipole moment of worldvolume stress-energy as well as the internal spin degrees of freedom. We show that the dipole correction is induced elastically by bending a black brane. We argue that the long-wavelength linear response coefficient capturing this effect is a relativistic generalization of the Young modulus of elastic materials and we compute it analytically. Using this we draw predictions for black rings in dimensions greater than six. Furthermore, we apply our corrected blackfold equations to various multispinning black hole configurations in the blackfold limit, finding perfect agreement with known analytic solutions.

Originalsprog	Engelsk
Tidsskrift	Journal of High Energy Physics (Online)
Vol/bind	2012
Udgave nummer	2
Sider (fra-til)	110
Antal sider	28
ISSN	1126-6708
DOI	https://doi.org/10.1007/jhep02(2012)110
Status	Udgivet - 1 feb. 2012

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10.1007/jhep02(2012)110

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AU - Armas, Jácome Saldanha N de O B

AU - Camps, Joan

AU - Harmark, Troels

AU - Obers, Niels Anne Jacob

PY - 2012/2/1

Y1 - 2012/2/1

N2 - We explore corrections in the blackfold approach, which is a worldvolume theory capturing the dynamics of thin black branes. The corrections probe the fine structure of the branes, going beyond the approximation in which they are infinitely thin, and account for the dipole moment of worldvolume stress-energy as well as the internal spin degrees of freedom. We show that the dipole correction is induced elastically by bending a black brane. We argue that the long-wavelength linear response coefficient capturing this effect is a relativistic generalization of the Young modulus of elastic materials and we compute it analytically. Using this we draw predictions for black rings in dimensions greater than six. Furthermore, we apply our corrected blackfold equations to various multispinning black hole configurations in the blackfold limit, finding perfect agreement with known analytic solutions.

AB - We explore corrections in the blackfold approach, which is a worldvolume theory capturing the dynamics of thin black branes. The corrections probe the fine structure of the branes, going beyond the approximation in which they are infinitely thin, and account for the dipole moment of worldvolume stress-energy as well as the internal spin degrees of freedom. We show that the dipole correction is induced elastically by bending a black brane. We argue that the long-wavelength linear response coefficient capturing this effect is a relativistic generalization of the Young modulus of elastic materials and we compute it analytically. Using this we draw predictions for black rings in dimensions greater than six. Furthermore, we apply our corrected blackfold equations to various multispinning black hole configurations in the blackfold limit, finding perfect agreement with known analytic solutions.

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DO - 10.1007/jhep02(2012)110

M3 - Journal article

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VL - 2012

SP - 110

JO - Journal of High Energy Physics (Online)

JF - Journal of High Energy Physics (Online)

IS - 2

ER -

The Young modulus of black strings and the fine structure of blackfolds

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