Zobrazeno 1 - 10
of 6 221
pro vyhledávání: '"Voelkel, A"'
We provide the most complete analysis so far of quasinormal modes of rotating black holes in a general higher-derivative extension of Einstein's theory. By finding the corrections to the Teukolsky equation and expressing them in a simple form, we are
Externí odkaz:
http://arxiv.org/abs/2409.04517
Autor:
Cruces, Sofia, Ganeriwala, Mohit D., Lee, Jimin, Völkel, Lukas, Braun, Dennis, Grundmann, Annika, Ran, Ke, Marín, Enrique G., Kalisch, Holger, Heuken, Michael, Vescan, Andrei, Mayer, Joachim, Godoy, Andrés, Daus, Alwin, Lemme, Max C.
Layered two-dimensional (2D) semiconductors have shown enhanced ion migration capabilities along their van der Waals (vdW) gaps and on their surfaces. This effect can be employed for resistive switching (RS) in devices for emerging memories, selector
Externí odkaz:
http://arxiv.org/abs/2408.09780
Modifications to general relativity lead to effects in the spectrum of quasi-normal modes of black holes. In this paper, we develop a parametrized formalism to describe deviations from general relativity in the Teukolsky equation, which governs linea
Externí odkaz:
http://arxiv.org/abs/2407.15947
Publikováno v:
Phys. Rev. D 110, 064084 (2024)
In this work, we study the inverse problem of analog gravity systems which admit rotation and energy-dependent boundary conditions. By extending two recent results, we provide a recipe that allows one to relate resonant transmission spectra with effe
Externí odkaz:
http://arxiv.org/abs/2406.16670
Publikováno v:
Phys. Rev. D 109, 096014 (2024)
Wave equations with energy-dependent potentials appear in many areas of physics, ranging from nuclear physics to black hole perturbation theory. In this work, we use the semi-classical WKB method to first revisit the computation of bound states of po
Externí odkaz:
http://arxiv.org/abs/2404.11478
Autor:
Dhani, Arnab, Völkel, Sebastian, Buonanno, Alessandra, Estelles, Hector, Gair, Jonathan, Pfeiffer, Harald P., Pompili, Lorenzo, Toubiana, Alexandre
Gravitational-wave (GW) observations of binary black-hole (BBH) coalescences are expected to address outstanding questions in astrophysics, cosmology, and fundamental physics. Realizing the full discovery potential of upcoming LIGO-Virgo-KAGRA (LVK)
Externí odkaz:
http://arxiv.org/abs/2404.05811
Autor:
Braun, Dennis, Ganeriwala, Mohit D., Völkel, Lukas, Ran, Ke, Lukas, Sebastian, Marín, Enrique G., Hartwig, Oliver, Prechtl, Maximilian, Wahlbrink, Thorsten, Mayer, Joachim, Duesberg, Georg S., Godoy, Andrés, Daus, Alwin, Lemme, Max C.
Two-dimensional (2D) materials are popular candidates for emerging nanoscale devices, including memristors. Resistive switching (RS) in such 2D material memristors has been attributed to the formation and dissolution of conductive filaments created b
Externí odkaz:
http://arxiv.org/abs/2309.13900
Publikováno v:
Phys. Rev. D 108, 124053 (2023)
Analog gravity models of black holes and exotic compact objects provide a unique opportunity to study key properties of such systems in controlled laboratory environments. In contrast to astrophysical systems, analog gravity systems can be prepared c
Externí odkaz:
http://arxiv.org/abs/2309.11168
Publikováno v:
Phys. Rev. D108, 124056 (2023)
We provide accurate universal relations that allow to estimate the moment of inertia $I$ and the ratio of kinetic to gravitational binding energy $T/W$ of uniformly rotating neutron stars from the knowledge of mass, radius, and moment of inertia of a
Externí odkaz:
http://arxiv.org/abs/2309.05643
The purpose of this chapter is to provide an overview of the exciting field of black hole quasi-normal modes and its capabilities to test general relativity in the 21st century. After motivating this line of research, we provide a qualitative introdu
Externí odkaz:
http://arxiv.org/abs/2305.01696