Zobrazeno 1 - 10
of 1 527
pro vyhledávání: '"Niayesh, A."'
One regime where we might see departures from general relativity is at the largest accessible scales, with a natural choice in cosmology being the cosmological horizon (or Hubble) scale. We investigate a single-parameter extension to the standard cos
Externí odkaz:
http://arxiv.org/abs/2412.09568
In analogue gravity studies, the goal is to replicate black hole phenomena, such as Hawking radiation, within controlled laboratory settings. In the realm of condensed matter systems, this may happen in 2D tilted Dirac cone materials based on honeyco
Externí odkaz:
http://arxiv.org/abs/2412.08517
We explore the possibility that quadratic gravity, as a renormalizable theory, describes the interior of quantum black holes. We find new exact power-law solutions to pure quadratic gravity under spherical symmetry, which are complex valued. The resu
Externí odkaz:
http://arxiv.org/abs/2411.19311
Autor:
Afshordi, Niayesh, Ashtekar, Abhay, Barausse, Enrico, Berti, Emanuele, Brito, Richard, Buoninfante, Luca, Carballo-Rubio, Raúl, Cardoso, Vitor, Carullo, Gregorio, Dafermos, Mihalis, De Laurentis, Mariafelicia, del Rio, Adrian, Di Filippo, Francesco, Eichhorn, Astrid, Emparan, Roberto, Gregory, Ruth, Herdeiro, Carlos A. R., Kunz, Jutta, Lehner, Luis, Liberati, Stefano, Mathur, Samir D., Nissanke, Samaya, Pani, Paolo, Platania, Alessia, Pretorius, Frans, Sasaki, Misao, Tiede, Paul, Unruh, William, Visser, Matt, Wald, Robert M.
The gravitational physics landscape is evolving rapidly, driven by our ability to study strong-field regions, in particular black holes. Black Holes Inside and Out gathered world experts to discuss the status of the field and prospects ahead. We hope
Externí odkaz:
http://arxiv.org/abs/2410.14414
Light cone selection effects on cosmic observables must be precisely accounted for in the next generation of surveys, including the Dark Energy Spectroscopic Instrument (DESI) survey. This will allow us to correctly model the data and extract subtle
Externí odkaz:
http://arxiv.org/abs/2410.04705
In an attempt to simulate black hole echoes (generated by potential quantum-gravitational structure) in numerical relativity, we recently described how to implement a reflecting boundary outside of the horizon of a black hole in spherical symmetry. H
Externí odkaz:
http://arxiv.org/abs/2409.17970
Autor:
Sajadian, Sedighe, Afshordi, Niayesh
A fraction of Galactic stars have compact companions which could be white dwarfs (WDs), neutron stars (NSs) or stellar-mass black holes (SBHs). In a detached and edge-on binary system including a main-sequence star and a compact object (denoted by WD
Externí odkaz:
http://arxiv.org/abs/2409.12441
Autor:
Goel, Lakshay, Patterson, Everett A., Preciado-Rivas, María Rosa, Torabian, Mahdi, Mann, Robert B., Afshordi, Niayesh
In pursuit of a full-fledged theory of quantum gravity, operational approaches offer insights into quantum-gravitational effects produced by quantum superposition of different spacetimes not diffeomorphic to one another. Recent work applies this appr
Externí odkaz:
http://arxiv.org/abs/2409.06818
Autor:
Abolfath, Ramin, Afshordi, Niayesh, Rahvar, Sohrab, van Duin, Adri, Radler, Martin, Taleei, Reza, Parodi, Katia, Lascaud, Julie, Mohan, Radhe
We present a multi-scale formalism that accounts for the formation of nano-scale bubbles/cavities owing to a burst of water molecules after the passage of high energy charged particles that leads to the formation of hot non-ionizing excitations or th
Externí odkaz:
http://arxiv.org/abs/2403.05880
Publikováno v:
Physical Review D 110, 043028, 21 August 2024
In this Letter, we propose to detect the interaction of a hypothetical coherently evolving cosmological scalar field with an orbital network of quantum sensors, focusing on the GPS satellite network as a test example. Cosmological scenarios, such as
Externí odkaz:
http://arxiv.org/abs/2311.17873