Zobrazeno 1 - 10
of 5 119
pro vyhledávání: '"Pedrotti A."'
Motivated by the Asymptotic Equipartition Property and its recently discovered role in the cutoff phenomenon, we initiate the systematic study of varentropy on discrete groups. Our main result is an approximate tensorization inequality which asserts
Externí odkaz:
http://arxiv.org/abs/2409.16869
Primordial black holes (PBHs) are usually assumed to be described by the Schwarzschild or Kerr metrics, which however feature unwelcome singularities. We study the possibility that PBHs are non-singular objects, considering four phenomenological, reg
Externí odkaz:
http://arxiv.org/abs/2409.02804
It is a common belief that a theory of quantum gravity should ultimately cure curvature singularities which are inevitable within General Relativity, and plague for instance the Schwarzschild and Kerr metrics, usually considered as prototypes for pri
Externí odkaz:
http://arxiv.org/abs/2409.02807
Autor:
Pedrotti, Davide, Jiang, Jun-Qian, Escamilla, Luis A., da Costa, Simony Santos, Vagnozzi, Sunny
The Hubble tension is inherently multidimensional, and bears important implications for parameters beyond $H_0$. We discuss the key role of the matter density parameter $\Omega_m$ and the physical cold dark matter density $\omega_c$. We argue that on
Externí odkaz:
http://arxiv.org/abs/2408.04530
We non-parametrically reconstruct the late-time expansion history in light of the latest Baryon Acoustic Oscillation (BAO) measurements from DESI combined with various Type Ia Supernovae (SNeIa) catalogs, using interpolation through piece-wise natura
Externí odkaz:
http://arxiv.org/abs/2408.02365
Autor:
Jiang, Jun-Qian, Giarè, William, Gariazzo, Stefano, Dainotti, Maria Giovanna, Di Valentino, Eleonora, Mena, Olga, Pedrotti, Davide, da Costa, Simony Santos, Vagnozzi, Sunny
The recent DESI Baryon Acoustic Oscillation measurements have led to tight upper limits on the neutrino mass sum, potentially in tension with oscillation constraints requiring $\sum m_{\nu} \gtrsim 0.06\,{\text{eV}}$. Under the physically motivated a
Externí odkaz:
http://arxiv.org/abs/2407.18047
Autor:
Brigati, Giovanni, Pedrotti, Francesco
In this paper we derive estimates for the Hessian of the logarithm (log-Hessian) for solutions to the heat equation. For initial data in the form of log-Lipschitz perturbation of strongly log-concave measures, the log-Hessian admits an explicit, unif
Externí odkaz:
http://arxiv.org/abs/2404.15205
Autor:
Pedrotti, Davide, Vagnozzi, Sunny
Publikováno v:
Phys. Rev. D 110 (2024) 084075
Eikonal quasinormal modes (QNMs) of black holes (BHs) and parameters of null geodesics, ultimately tied to the appearance of BHs to external observers, are known to be related, and the eikonal QNM-BH shadow radii correspondence has been extensively s
Externí odkaz:
http://arxiv.org/abs/2404.07589
We prove upper bounds on the $L^\infty$-Wasserstein distance from optimal transport between strongly log-concave probability densities and log-Lipschitz perturbations. In the simplest setting, such a bound amounts to a transport-information inequalit
Externí odkaz:
http://arxiv.org/abs/2402.04151
Autor:
Kesen, Ilker, Pedrotti, Andrea, Dogan, Mustafa, Cafagna, Michele, Acikgoz, Emre Can, Parcalabescu, Letitia, Calixto, Iacer, Frank, Anette, Gatt, Albert, Erdem, Aykut, Erdem, Erkut
With the ever-increasing popularity of pretrained Video-Language Models (VidLMs), there is a pressing need to develop robust evaluation methodologies that delve deeper into their visio-linguistic capabilities. To address this challenge, we present Vi
Externí odkaz:
http://arxiv.org/abs/2311.07022