University of Milan

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356 papers · 1 filter

hep-th2024★ 5 cited

Quasinormal Corrections to Near-Extremal Black Hole Thermodynamics

Daniel Kapec, Y. T. Albert Law, Chiara Toldo

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 f…

hep-th2023★ 41 cited

Logarithmic Corrections to Kerr Thermodynamics

Daniel Kapec, Ahmed Sheta, Andrew Strominger +1

Recent work has shown that loop corrections from massless particles generate $\frac{3}{2} lo g T_{Hawking}$ corrections to black hole entropy which dominate the thermodynamic…

hep-th2023★ 5 cited

S-duality in the Cardy-like limit of the superconformal index

Antonio Amariti, Andrea Zanetti

We evaluate the superconformal index of 4d $N = 4$ SYM with gauge algebra $so (2 N_{c} + 1)$ in the Cardy-like limit. We then study the relation with the results obtained for the…

hep-th2023★ 13 cited

$T^{1, 1}$ truncation on the spindle

Antonio Amariti, Nicolò Petri, Alessia Segati

We study the compactification of the $N = 2$ AdS $_{5}$ consistent truncation of the conifold, in presence of a Betti vector multiplet, on the spindle. We derive the BPS equat…

hep-th2023★ 13 cited

Magnetic charge and black hole supersymmetric quantum statistical relation

Pietro Benetti Genolini, Chiara Toldo

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 traj…

hep-th2022★ 29 cited

Near-Extremal Limits of de Sitter Black Holes

Alejandra Castro, Francesca Mariani, Chiara Toldo

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…

hep-th2022★ 5 cited

Rotating black holes with Nil or SL(2, $R$ ) horizons

Federico Faedo, Silke Klemm, Pietro Mariotti

We construct rotating black holes in $N = 2$ , $D = 5$ minimal and matter-coupled gauged supergravity, with horizons that are homogeneous but not isotropic. Such spaces belong to the ei…

hep-th2022★ 2 cited

Kerr-Newman black holes from $N = 1^{*}$

Antonio Amariti, Alessia Segati

The microstate counting of charged rotating AdS $_{5}$ supersymmetric black holes has been reformulated in terms of an extremization problem, obtained from the superconformal index of…

hep-th2022★ 5 cited

Chiral dualities for SQCD $_{3}$ with D-type superpotential

Antonio Amariti, Davide Morgante

We study dualities for $3 d$ $U (N_{c})_{k}$ chiral SQCD with $D_{n + 2}$ -type superpotential, with $n$ odd. We give a complete classification of such dualities in terms of the nu…

hep-th2022★ 5 cited

$N = 1$ conformal dualities from unoriented chiral quivers

Antonio Amariti, Massimo Bianchi, Marco Fazzi +3

We study various orientifold projections of 4d $N = 1$ toric gauge theories, associated with CY singularities known as $L^{a, b, a} / Z_{2}$ , with $a + b$ even. We obtain…

hep-th2022★ 3 cited

Nonperturbative renormalization of the lattice Sommerfield vector model

Vieri Mastropietro

The lattice Sommerfield model, describing a massive vector gauge field coupled to a light fermion in 2d, is an ideal candidate to verify perturbative conclusions. In contrast with…

hep-th2022★ 6 cited

Webs of 3d $N = 2$ dualities with D-type superpotentials

Antonio Amariti, Simone Rota

We study 3d $N = 2$ dualities arising from the compactification of 4d $N = 1$ $U s p (2 n)$ SQCD with two antisymmetric rank-two tensors and $D_{k + 2}$ -type superpotent…

hep-th2022★ 17 cited

Bubbles of nothing in binary black holes and black rings, and viceversa

Marco Astorino, Roberto Emparan, Adriano Viganò

We argue that expanding bubbles of nothing are a widespread feature of systems of black holes with multiple or non-spherical horizons, appearing as a limit of regions that are narr…

hep-th2022★ 14 cited

Ground State for the Klein-Gordon field in anti-de Sitter spacetime with dynamical Wentzell boundary conditions

Claudio Dappiaggi, Benito A. Juárez-Aubry, Alessio Marta

We consider a real Klein-Gordon field in the Poincaré patch of $(d + 1)$ -dimensional anti-de Sitter spacetime, PAdS $_{d + 1}$ , and impose dynamical boundary condition on the asymptotic…

hep-th2022★ 9 cited

3d $N = 2$ SO/USp adjoint SQCD: s-confinement and exact identites

Antonio Amariti, Simone Rota

We study 3d $N = 2$ SQCD with symplectic and orthogonal gauge groups and adjoint matter. For $U S p (2 n)$ with two fundamentals and $S O (N)$ with one vector these models have b…

hep-th2022★ 36 cited

AdS-Taub-NUT spacetimes and exact black bounces with scalar hair

José Barrientos, Adolfo Cisterna, Nicolás Mora +1

We present a new family of exact four-dimensional Taub-NUT spacetimes in Einstein- $Λ$ theory supplemented with a conformally coupled scalar field exhibiting a power-counting super-…

hep-th2021★ 11 cited

Conformal S-dualities from O-planes

Antonio Amariti, Marco Fazzi, Simone Rota +1

We study 4d SCFTs obtained by orientifold projections on necklace quivers with fractional branes. The models obtained by this procedure are $N = 1$ linear quivers with unit…

hep-th2021★ 10 cited

3d $N = 2$ dualities for $S U (N_{c}) \times U (1)$ Chern-Simons gauge theories

Antonio Amariti, Simone Rota

We systematically study 3d $N = 2$ dualities for $U (N_{c})$ gauge theories with different CS levels for the abelian and the non-abelian factors. We derive such dualities by a…

hep-th2021★ 7 cited

Supersymmetric black holes with spiky horizons

Federico Faedo, Silke Klemm, Adriano Viganò

We use the recipe of arXiv:1003.2974 to find half-BPS near-horizon geometries in the t $^{3}$ model of $N = 2$ , $D = 4$ gauged supergravity, and explicitely construct some new examples. A…

hep-th2021★ 5 cited

Expanding on the Cardy-like limit of the superconformal index of 4d $N = 1$ ABCD SCFTs

Antonio Amariti, Marco Fazzi, Alessia Segati

We study the Cardy-like limit of the superconformal index of generic $N = 1$ SCFTs with ABCD gauge algebra, providing strong evidence for a universal formula that captures…

hep-th2021

A late times approximation for the SYK spectral form factor

Matteo A. Cardella

We find a late times approximation for the SYK spectral form factor from a large $N$ steepest descent version of the path integral over two replica collective fields. Main ingredie…

hep-th2020

Quantization and soliton-like solutions for the $ΦΨ$ -model in a optic fiber

Francesco Belgiorno, Sergio Luigi Cacciatori, Simone Trevisan +1

In the framework of a mesoscopical model for dielectric media we provide an analytical description for the electromagnetic field confined in a cylindrical cavity containing a finit…

hep-th2020★ 1 cited

BPS Black Hole Entropy and Attractors in Very Special Geometry. Cubic Forms, Gradient Maps and their Inversion

Bert van Geemen, Alessio Marrani, Francesco Russo

We consider Bekenstein-Hawking entropy and attractors in extremal BPS black holes of $N = 2$ , $D = 4$ ungauged supergravity obtained as reduction of minimal, matter-coupled $…

hep-th2020★ 22 cited

Schrödinger connection with selfdual nonmetricity vector in 2+1 dimensions

Silke Klemm, Lucrezia Ravera

We present a three-dimensional metric affine theory of gravity whose field equations lead to a connection introduced by Schrödinger many decades ago. Although involving nonmetricit…

Quasinormal Corrections to Near-Extremal Black Hole Thermodynamics

Logarithmic Corrections to Kerr Thermodynamics

S-duality in the Cardy-like limit of the superconformal index

T1,1 truncation on the spindle

Magnetic charge and black hole supersymmetric quantum statistical relation

Near-Extremal Limits of de Sitter Black Holes

Rotating black holes with Nil or SL(2,R) horizons

Kerr-Newman black holes from N=1∗

Chiral dualities for SQCD3​ with D-type superpotential

N=1 conformal dualities from unoriented chiral quivers

Nonperturbative renormalization of the lattice Sommerfield vector model

Webs of 3d N=2 dualities with D-type superpotentials

Bubbles of nothing in binary black holes and black rings, and viceversa

Ground State for the Klein-Gordon field in anti-de Sitter spacetime with dynamical Wentzell boundary conditions

3d N=2 SO/USp adjoint SQCD: s-confinement and exact identites

AdS-Taub-NUT spacetimes and exact black bounces with scalar hair

Conformal S-dualities from O-planes

3d N=2 dualities for SU(Nc​)×U(1) Chern-Simons gauge theories

Supersymmetric black holes with spiky horizons

Expanding on the Cardy-like limit of the superconformal index of 4d N=1 ABCD SCFTs

A late times approximation for the SYK spectral form factor

Quantization and soliton-like solutions for the ΦΨ-model in a optic fiber

BPS Black Hole Entropy and Attractors in Very Special Geometry. Cubic Forms, Gradient Maps and their Inversion

Schrödinger connection with selfdual nonmetricity vector in 2+1 dimensions

$T^{1, 1}$ truncation on the spindle

Rotating black holes with Nil or SL(2, $R$ ) horizons

Kerr-Newman black holes from $N = 1^{*}$

Chiral dualities for SQCD $_{3}$ with D-type superpotential

$N = 1$ conformal dualities from unoriented chiral quivers

Webs of 3d $N = 2$ dualities with D-type superpotentials

3d $N = 2$ SO/USp adjoint SQCD: s-confinement and exact identites

3d $N = 2$ dualities for $S U (N_{c}) \times U (1)$ Chern-Simons gauge theories

Expanding on the Cardy-like limit of the superconformal index of 4d $N = 1$ ABCD SCFTs

Quantization and soliton-like solutions for the $ΦΨ$ -model in a optic fiber