| Title: | Electrodynamics of black holes in STU supergravity |
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| Authors: | ID Cvetič, Mirjam (Author)
ID Gibbons, G. W. (Author)
ID Pope, Christopher N. (Author)
ID Saleem, Zain H. (Author) |
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| Files: |  Journal_of_High_Energy_Physics_2014_Cvetic_et_al._Electrodynamics_of_black_holes_in_STU_supergravity.pdf (563,26 KB)
MD5: 6153FDEE7A23DF2056A6BD11C35B65FA
 http://link.springer.com/10.1007/JHEP09(2014)001
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UM - University of Maribor
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| Abstract: | External magnetic fields can probe the composite structure of black holes in string theory. With this motivation we study magnetised four-charge black holes in the STU model, a consistent truncation of maximally supersymmetric supergravity with four types of electromagnetic fields. We employ solution generating techniques to obtain Melvin backgrounds, and black holes in these backgrounds. For an initially electrically charged static black hole immersed in magnetic fields, we calculate the resultant angular momenta and analyse their global structure. Examples are given for which the ergoregion does not extend to infinity. We calculate magnetic moments and gyromagnetic ratios via Larmor's formula. Our results are consistent with earlier special cases. A scaling limit and associated subtracted geometry in a single surviving magnetic field is shown to lift to AdS(3) x S-2. Magnetizing magnetically charged black holes give static solutions with conical singularities representing strings or struts holding the black holes against magnetic forces. In some cases it is possible to balance these magnetic forces. |
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| Keywords: | black holes, supergravity, string theory, conformal field models, string duality |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2014 |
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| Number of pages: | str. 1-27 |
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| Numbering: | Letn. 2014, št. 9 |
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| PID: | 20.500.12556/DKUM-66459  |
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| ISSN: | 1029-8479 |
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| UDC: | 530.122.3 |
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| ISSN on article: | 1029-8479 |
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| COBISS.SI-ID: | 81515265 |
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| DOI: | 10.1007/JHEP09(2014)001 |
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| NUK URN: | URN:SI:UM:DK:NRCK0D7G |
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| Publication date in DKUM: | 27.06.2017 |
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| Views: | 1674 |
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| Downloads: | 453 |
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| Metadata: |    |
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| Categories: | Misc.
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