3D Spacetimes Construction from $$(1+1)$$(1+1)D Kitaev Superconductor Model
Sign Up to like & getrecommendations! Published in 2018 at "Foundations of Physics"
DOI: 10.1007/s10701-018-0204-x
Abstract: This is a proceedings based on the talk that was made in the workshop “Black Holes, Gravitational Waves and Spacetime Singularities” at Vatican Observatory on 9–12 May 2017. Since then we have constructed some corrections,… read more here.
Keywords: spacetime; superconductor model; kitaev superconductor;
Type N Einstein space Time Machine spacetime
Sign Up to like & getrecommendations! Published in 2017 at "Annals of Physics"
DOI: 10.1016/j.aop.2017.04.012
Abstract: Abstract We present an Einstein space axially symmetry spacetime admitting closed timelike curves (CTCs) which appear after a certain instant of time, i.e., a time machine spacetime. The spacetime is a four-dimensional generalization of flat… read more here.
Keywords: space; machine spacetime; time machine; spacetime ... See more keywords
An efficient dissipation–preserving Legendre–Galerkin spectral method for the Higgs boson equation in the de Sitter spacetime universe
Sign Up to like & getrecommendations! Published in 2021 at "Applied Numerical Mathematics"
DOI: 10.1016/j.apnum.2020.10.013
Abstract: Abstract Since the emergence of numerical methods in mathematical modeling, fundamental properties such as convergence, efficiency, computational accuracy, and stability have been considered crucial for deciding the utility of a numerical approach. In more recent… read more here.
Keywords: higgs boson; energy; method; scheme ... See more keywords
What Is Spacetime?
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DOI: 10.1038/d41586-018-05095-z
Abstract: Physicists believe that at the tiniest scales, space emerges from quanta. What might these building blocks look like?Physicists believe that at the tiniest scales, space emerges from quanta. What might these building blocks look like? read more here.
Keywords: spacetime;
Peeling of Dirac field on Kerr spacetime
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DOI: 10.1063/1.5121433
Abstract: In a recent paper with Nicolas [Ann. Henri Poincare 20(10), 3419–3470 (2019); arXiv:1801.08996], we studied the peeling for scalar fields on Kerr metrics. The present work extends these results to Dirac fields on the same… read more here.
Keywords: dirac field; regularity; kerr; peeling dirac ... See more keywords
Quantum metric for null separated events and spacetime atoms
Sign Up to like & getrecommendations! Published in 2019 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ab0a40
Abstract: Recently, a proposal has been made to figure out the expected discrete nature of spacetime at the smallest scales in terms of atoms of spacetime, capturing their effects through a scalar $\rho$, related to their… read more here.
Keywords: separated events; null separated; quantum metric; spacetime ... See more keywords
Zero-point gravitational field equations
Sign Up to like & getrecommendations! Published in 2020 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ac0310
Abstract: We study the recently reported qmetric (or zero-point-length) expressions of the Ricci (bi)scalar R (q) (namely, expressions of the Ricci scalar in a spacetime with a limit length L 0 built in), focusing specifically on… read more here.
Keywords: field; point gravitational; zero point; field equations ... See more keywords
On the non-linear stability of the Cosmological region of the Schwarzschild-de Sitter spacetime
Sign Up to like & getrecommendations! Published in 2023 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/acdb3f
Abstract: The non-linear stability of the sub-extremal Schwarzschild-de Sitter spacetime in the stationary region near the conformal boundary is analysed using a technique based on the extended conformal Einstein field equations and a conformal Gaussian gauge.… read more here.
Keywords: spacetime; region; schwarzschild sitter; stability ... See more keywords
$z-$Weyl gravity in higher dimensions
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2017/09/024
Abstract: We consider higher dimensional gravity in which the four dimensional spacetime and extra dimensions are not treated on an equal footing. The anisotropy is implemented in the ADM decomposition of higher dimensional metric by requiring… read more here.
Keywords: gravity higher; weyl gravity; four dimensional; higher dimensions ... See more keywords
Possible relationship between initial conditions for inflation and past geodesic incompleteness of the inflationary spacetime
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2023/05/007
Abstract: According to the Borde-Guth-Vilenkin (BGV) theorem an expanding region of spacetime cannot be extended to the past beyond some boundary ℬ. Therefore, the inflationary universe must have had some kind of beginning. However, the BGW… read more here.
Keywords: possible relationship; relationship initial; inflation; spacetime ... See more keywords
Interface in AdS black hole spacetime
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DOI: 10.1093/ptep/ptz164
Abstract: We consider a defect solution in the anti-de Sitter (AdS) black hole spacetime. This is a generalization of the previous work [K. Nagasaki et al., J. High Energy Phys. 1201, 139 (2012)] to another spacetime.… read more here.
Keywords: black hole; interface ads; ads black; spacetime ... See more keywords