Zobrazeno 1 - 10
of 390
pro vyhledávání: '"Adler, Stephen L."'
Autor:
Adler, Stephen L., Doherty, Brent
We continue the study of "dynamical gravastars", constructed by solving the Tolman-Oppenheimer-Volkoff (TOV) equations with relativistic matter, undergoing a phase transition at high pressure to a state with negative energy density. We define the "si
Externí odkaz:
http://arxiv.org/abs/2309.13380
Autor:
Adler, Stephen L.
We propose that the universe contains two identical sets of particles and gauge interactions, coupling only through gravitation, which differ by their Higgs potentials. We postulate that because of underlying symmetries, the two sectors when uncouple
Externí odkaz:
http://arxiv.org/abs/2308.08107
Autor:
Adler, Stephen L.
I review the basic ideas of "trace dynamics", as formulated in my 2004 Cambridge University Press book "Quantum Theory as an Emergent Phenomenon", and then discuss how they have influenced much of my work of the last two decades.
Comment: 11 pag
Comment: 11 pag
Externí odkaz:
http://arxiv.org/abs/2307.14524
Autor:
Adler, Stephen L.
Publikováno v:
Physical Review D 109, 024020 (2024)
Using graphs plotted from the Mathematica notebooks posted with our paper ``Dynamical Gravastars'', we show that a dynamical gravastar has no hard surface, and that a second light sphere resides in the deep interior where there is maximum time dilati
Externí odkaz:
http://arxiv.org/abs/2301.11821
Autor:
Adler, Stephen L.
Publikováno v:
Astrophysics and Space Science, vol. 369, issue 7, no. 65 (2024)
We have proposed that galaxy formation is catalyzed by the collision of infalling and outstreaming particles from leaky, horizonless astrophysical black holes, most likely gravastars, and based on this gave a model for the disk galaxy scale length. I
Externí odkaz:
http://arxiv.org/abs/2210.03742
Equation of state, and atomic electron effective potential, for a Weyl scaling invariant dark energy
Autor:
Adler, Stephen L.
Publikováno v:
Phys. Rev. D {\bf 110}, 024051 (2024)
A key attribute of dark energy is the equation of state parameter $w={\rm pressure}/{\rm energy~density}$, and this has been recently measured observationally, giving values close to $-1$. In this paper we calculate the $w$ parameter characterizing t
Externí odkaz:
http://arxiv.org/abs/2209.14484
Autor:
Adler, Stephen L.
Publikováno v:
Phys Rev D 106, 104061 (2022)
We combine the ideas of a Weyl scaling invariant dark energy action, which eliminates black hole horizons, with the ``gravastar'' idea of a jump in the hole interior from a normal matter equation of state to an equation of state where pressure plus d
Externí odkaz:
http://arxiv.org/abs/2209.02537
Autor:
Adler, Stephen L., Virbhadra, K. S.
Publikováno v:
General Relativity and Gravitation 54:93 (2022)
We review the equations determining the photon sphere radius and the black hole shadow radius, and calculate the cosmological constant corrections arising when the dark energy action has the usual form, and when dark energy arises from a Weyl scaling
Externí odkaz:
http://arxiv.org/abs/2205.04628
Autor:
Adler, Stephen L.
Publikováno v:
General Relativity and Gravitation 55:1 (2023)
We estimate the changes in solar system tests of general relativity when "dark energy" arises from a Weyl scaling invariant action, using the modified Schwarzschild-like spherically symmetric solution obtained in this case by Adler and Ramazano\vglu.
Externí odkaz:
http://arxiv.org/abs/2204.09132