Charge (in)stability and superradiance of Topological Stars
Abstract We study linear massive scalar charged perturbations of Topological Stars in the fuzzball and in the black hole (Black String) regimes. The objects that naturally couple to the electric 3-form field strength of these solutions are charged strings, wound around the compact direction. We expl...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-07-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP07(2024)143 |
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| author | Andrea Cipriani Carlo Di Benedetto Giorgio Di Russo Alfredo Grillo Giuseppe Sudano |
| author_facet | Andrea Cipriani Carlo Di Benedetto Giorgio Di Russo Alfredo Grillo Giuseppe Sudano |
| author_sort | Andrea Cipriani |
| collection | DOAJ |
| description | Abstract We study linear massive scalar charged perturbations of Topological Stars in the fuzzball and in the black hole (Black String) regimes. The objects that naturally couple to the electric 3-form field strength of these solutions are charged strings, wound around the compact direction. We explore the possibility of instabilities of these solutions, in analogy with the charge instability already highlighted for other non-BPS geometries like JMaRT. This issue is addressed by calculating quasi-normal mode frequencies with a variety of techniques: WKB approximation, direct integration, Leaver method and by exploiting the recently discovered correspondence between black hole/fuzzball perturbation theory and quantum Seiberg-Witten curves. All mode frequencies we find have negative imaginary parts, implying an exponential decay in time. This suggests a linear stability of Topological Stars also in this new scenario. In addition, we study the charge superradiance for the Black String. We compute the amplification factor with the numerical integration method and a quantum Seiberg-Witten motivated definition including instantonic corrections. |
| format | Article |
| id | doaj-art-ac2c73504be74dc2acb9ea96b09e05c6 |
| institution | OA Journals |
| issn | 1029-8479 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-ac2c73504be74dc2acb9ea96b09e05c62025-08-20T02:11:17ZengSpringerOpenJournal of High Energy Physics1029-84792024-07-012024713210.1007/JHEP07(2024)143Charge (in)stability and superradiance of Topological StarsAndrea Cipriani0Carlo Di Benedetto1Giorgio Di Russo2Alfredo Grillo3Giuseppe Sudano4Dipartimento di Fisica, Università di Roma “Tor Vergata” & Sezione INFN Roma2Dipartimento di Fisica, Università di Roma “Tor Vergata” & Sezione INFN Roma2Dipartimento di Fisica, Università di Roma “Tor Vergata” & Sezione INFN Roma2Dipartimento di Fisica, Università di Roma “Tor Vergata” & Sezione INFN Roma2Dipartimento di Fisica, Università di Roma “Tor Vergata” & Sezione INFN Roma2Abstract We study linear massive scalar charged perturbations of Topological Stars in the fuzzball and in the black hole (Black String) regimes. The objects that naturally couple to the electric 3-form field strength of these solutions are charged strings, wound around the compact direction. We explore the possibility of instabilities of these solutions, in analogy with the charge instability already highlighted for other non-BPS geometries like JMaRT. This issue is addressed by calculating quasi-normal mode frequencies with a variety of techniques: WKB approximation, direct integration, Leaver method and by exploiting the recently discovered correspondence between black hole/fuzzball perturbation theory and quantum Seiberg-Witten curves. All mode frequencies we find have negative imaginary parts, implying an exponential decay in time. This suggests a linear stability of Topological Stars also in this new scenario. In addition, we study the charge superradiance for the Black String. We compute the amplification factor with the numerical integration method and a quantum Seiberg-Witten motivated definition including instantonic corrections.https://doi.org/10.1007/JHEP07(2024)143Black HolesBlack Holes in String TheorySupersymmetric Gauge Theory |
| spellingShingle | Andrea Cipriani Carlo Di Benedetto Giorgio Di Russo Alfredo Grillo Giuseppe Sudano Charge (in)stability and superradiance of Topological Stars Journal of High Energy Physics Black Holes Black Holes in String Theory Supersymmetric Gauge Theory |
| title | Charge (in)stability and superradiance of Topological Stars |
| title_full | Charge (in)stability and superradiance of Topological Stars |
| title_fullStr | Charge (in)stability and superradiance of Topological Stars |
| title_full_unstemmed | Charge (in)stability and superradiance of Topological Stars |
| title_short | Charge (in)stability and superradiance of Topological Stars |
| title_sort | charge in stability and superradiance of topological stars |
| topic | Black Holes Black Holes in String Theory Supersymmetric Gauge Theory |
| url | https://doi.org/10.1007/JHEP07(2024)143 |
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