Chiara Toldo
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View article: Quantum corrections to the path integral of near extremal de Sitter black holes
Quantum corrections to the path integral of near extremal de Sitter black holes Open
A bstract We study quantum corrections to the Euclidean path integral of charged and static four-dimensional de Sitter (dS 4 ) black holes near extremality. These black holes admit three different extremal limits (Cold, Nariai and Ultracol…
View article: Mixed ’t Hooft anomalies and the Witten effect for AdS black holes
Mixed ’t Hooft anomalies and the Witten effect for AdS black holes Open
A bstract For a variety of BPS black holes in string theory, the supersymmetric index has provided a microscopic validation of the Bekenstein-Hawking formula. In the near-BPS limit, a gravitational path integral analysis previously reveale…
View article: The spectrum of near-BPS Kerr-Newman black holes and the ABJM mass gap
The spectrum of near-BPS Kerr-Newman black holes and the ABJM mass gap Open
A bstract Supersymmetric rotating 1/16-BPS black holes in AdS 4 × S 7 are expected to capture the average degeneracy of BPS states in the dual ABJM superconformal theory for given fixed charges. This has been successfully demonstrated for …
View article: Quasinormal corrections to near-extremal black hole thermodynamics
Quasinormal corrections to near-extremal black hole thermodynamics Open
A bstract Recent work on the quantum mechanics of near-extremal non-supersymmetric black holes has identified a characteristic T 3/2 scaling of the low temperature black hole partition function. This result has only been derived using the …
View article: Gravitational dynamics of near-extreme Kerr (Anti-)de Sitter black holes
Gravitational dynamics of near-extreme Kerr (Anti-)de Sitter black holes Open
We analyze the thermodynamic response near extremality of black holes with angular momentum in (3+1)-dimensional de Sitter and Anti-de Sitter spacetimes. While Kerr-AdS$_4$ is characterized by a single extremal limit, for Kerr-dS$_4$ there…
View article: Mixed 't Hooft Anomalies and the Witten Effect for AdS Black Holes
Mixed 't Hooft Anomalies and the Witten Effect for AdS Black Holes Open
For a variety of BPS black holes in string theory, the supersymmetric index has provided a microscopic validation of the Bekenstein-Hawking formula. In the near-BPS limit, a gravitational path integral analysis previously revealed the semi…
View article: The spectrum of near-BPS Kerr-Newman black holes and the ABJM mass gap
The spectrum of near-BPS Kerr-Newman black holes and the ABJM mass gap Open
Supersymmetric rotating 1/16-BPS black holes in $AdS_4 \times S^7$ are expected to capture the average degeneracy of BPS states in the dual ABJM superconformal theory for given fixed charges. This has been successfully demonstrated for the…
View article: Logarithmic Corrections to Kerr Thermodynamics
Logarithmic Corrections to Kerr Thermodynamics Open
Recent work has shown that loop corrections from massless particles generate $\frac{3}{2}\log T_{\text{Hawking}}$ corrections to black hole entropy which dominate the thermodynamics of cold near-extreme charged black holes. Here we adapt t…
View article: Magnetic charge and black hole supersymmetric quantum statistical relation
Magnetic charge and black hole supersymmetric quantum statistical relation Open
We study the thermodynamics in the Bogomol'nyi-Prasad-Sommerfield (BPS) limit of anti–de Sitter black holes realizing the topological twist. We use a limiting procedure that allows us to reach the extremal point along a trajectory in the s…
View article: Magnetic charge and black hole supersymmetric quantum statistical relation
Magnetic charge and black hole supersymmetric quantum statistical relation Open
We study the thermodynamics in the BPS limit of AdS black holes realizing the topological twist. We use a limiting procedure that allows us to reach the extremal point along a trajectory in the space of supersymmetric Euclidean solutions. …
View article: Near-Extremal Limits of de Sitter Black Holes
Near-Extremal Limits of de Sitter Black Holes Open
We analyze the thermodynamic response near extremality of charged black holes in four-dimensional Einstein-Maxwell theory with a positive cosmological constant. The latter exhibit three different extremal limits, dubbed cold, Nariai and ul…
View article: A magnetically induced quantum critical point in holography
A magnetically induced quantum critical point in holography Open
Here, we investigate quantum critical points in a 2+1 dimensional gauge theory at finite chemical potential χ and magnetic field B. The gravity dual is based on 4D N = 2 Fayet-Iliopoulos gauged supergravity and the solutions we consider — …
View article: Betti multiplets, flows across dimensions and c-extremization
Betti multiplets, flows across dimensions and c-extremization Open
We consider 4d N = 1 SCFTs, topologically twisted on compact constant curvature Riemann surfaces, giving rise to 2d N = (0; 2) SCFTs. The exact R-current of these 2d SCFT extremizes the central charge c2d, similarly to the 4d picture, wher…
View article: Rotating 5D black holes: Interactions and deformations near extremality
Rotating 5D black holes: Interactions and deformations near extremality Open
We study a two-dimensional theory of gravity coupled to matter that is relevant to describe holographic properties of black holes with two equal angular momenta in five dimensions (with or without cosmological constant). We focus on the ne…
View article: Report on 2106.00649v2
Report on 2106.00649v2 Open
We study a two-dimensional theory of gravity coupled to matter that is relevant to describe holographic properties of black holes with a single rotational parameter in five dimensions (with or without cosmological constant).We focus on the…
View article: Report on 2106.00649v2
Report on 2106.00649v2 Open
We study a two-dimensional theory of gravity coupled to matter that is relevant to describe holographic properties of black holes with a single rotational parameter in five dimensions (with or without cosmological constant).We focus on the…
View article: Holographic duals of refined partition functions
Holographic duals of refined partition functions Open
Recent years have witnessed lots of progress in the computation of supersymmetric partition functions of SCFTs on curved manifolds via localization. The twisted partition function on product manifolds of the form $S^1 \times Σ_g$, where $Σ…
View article: Supersymmetric Rényi entropy and charged hyperbolic black holes
Supersymmetric Rényi entropy and charged hyperbolic black holes Open
The supersymmetric Rényi entropy across a spherical entangling surface in a $d$-dimensional SCFT with flavor defects is equivalent to a supersymmetric partition function on $\mathbb{H}^{d-1} \times \mathbb{S}^1$, which can be computed exac…
View article: Black holes with halos
Black holes with halos Open
We present new AdS4 black hole solutions in N = 2 gauged supergravity coupled to vector and hypermultiplets. We focus on a particular consistent truncation of M-theory on the homogeneous Sasaki-Einstein seven-manifold M111, characterized b…
View article: Segmented strings in AdS 3
Segmented strings in AdS 3 Open
We study segmented strings in flat space and in $AdS_3$. In flat space, these\nwell known classical motions describe strings which at any instant of time are\npiecewise linear. In $AdS_3$, the worldsheet is composed of faces each of which\…