Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Haggard, Hal M."'
Publikováno v:
Phys. Rev. D 109, 106016 (2024)
Quantum gravitational tunneling effects are expected to give rise to a number of interesting observable phenomena, including, in particular, the evolution of black holes at the end of their existence or the emergence of the early universe from a quan
Externí odkaz:
http://arxiv.org/abs/2402.09038
In this chapter we take up the quantum Riemannian geometry of a spatial slice of spacetime. While researchers are still facing the challenge of observing quantum gravity, there is a geometrical core to loop quantum gravity that does much to define th
Externí odkaz:
http://arxiv.org/abs/2302.02840
Autor:
Bruna, Margaret, Cowan, Nicolas B., Sheffler, Julia, Haggard, Hal M., Bourdon, Audrey, Mâlin, Mathilde
Future missions like Roman, HabEx, and LUVOIR will directly image exoplanets in reflected light. While current near infrared direct imaging searches are only sensitive to young, self-luminous planets whose brightness is independent of their orbital p
Externí odkaz:
http://arxiv.org/abs/2208.08447
The first computation of a spin foam dynamics that provides a test of the quantum equations of motions of gravity is presented. Specifically, a triangulation that includes an inner edge is treated. The computation leverages the recently introduced ef
Externí odkaz:
http://arxiv.org/abs/2011.14468
Publikováno v:
Phys. Rev. Lett. 125, 231301, 2020
A number of approaches to four-dimensional quantum gravity, such as loop quantum gravity and holography, situate areas as their fundamental variables. However, this choice of kinematics can easily lead to gravitational dynamics peaked on flat spaceti
Externí odkaz:
http://arxiv.org/abs/2004.07013
Black hole entropy is a robust prediction of quantum gravity with no established phenomenological consequences to date. We use the Bekenstein-Hawking entropy formula and general-relativistic statistical mechanics to determine the probability distribu
Externí odkaz:
http://arxiv.org/abs/1812.05127
Gravity is uniquely situated in between classical topological field theories and standard local field theories. This can be seen in the the quasi-local nature of gravitational observables, but is nowhere more apparent than in gravity's holographic fo
Externí odkaz:
http://arxiv.org/abs/1811.11744
Autor:
Bianchi, Eugenio, Haggard, Hal M.
Due to quantum fluctuations, a black hole of mass $M$ represents an average over an ensemble of black hole geometries with angular momentum. This observation is apparently at odds with the fact that the curvature singularity inside a rotating black h
Externí odkaz:
http://arxiv.org/abs/1803.10858
Discretization of general relativity is a promising route towards quantum gravity. Discrete geometries have a finite number of degrees of freedom and can mimic aspects of quantum geometry. However, selection of the correct discrete freedoms and descr
Externí odkaz:
http://arxiv.org/abs/1802.09551
Future space telescopes will directly image extrasolar planets at visible wavelengths. Time-resolved reflected light from an exoplanet encodes information about atmospheric and surface inhomogeneities. Previous research has shown that the light curve
Externí odkaz:
http://arxiv.org/abs/1802.06805