Tidal resonances for fuzzballs

Di Russo, Giorgio; Fucito, Francesco; Morales, Jose Francisco

doi:10.1007/jhep04(2024)149

J. High Energ. Phys.

2024

DOI: 10.1007/jhep04(2024)149

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Tidal resonances for fuzzballs

Giorgio Di Russo,

Francesco Fucito,

Jose Francisco Morales

Abstract: We study the gravitational tidal response of D1D5, Top Star and (1,0,n) strata horizonless geometries. We find that the tidal interactions in fuzzball geometries, unlike in the case of black holes, exhibits a sequence of resonant peaks associated to the existence of metastable bound states. The spectrum of resonant frequencies is computed by semianalytical and numerical methods.

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Cited by 1 publication

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Charge (in)stability and superradiance of Topological Stars

Cipriani,

Di Benedetto,

Di Russo

et al. 2024

J. High Energ. Phys.

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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.

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Charge (in)stability and superradiance of Topological Stars

Cipriani,

Di Benedetto,

Di Russo

et al. 2024

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

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Tidal resonances for fuzzballs

Cited by 1 publication

References 72 publications

Charge (in)stability and superradiance of Topological Stars

Charge (in)stability and superradiance of Topological Stars

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