Results 121 to 130 of about 202,532 (277)

COSMOLOGICAL PERTURBATIONS AND THE RUNNING COSMOLOGICAL CONSTANT MODEL [PDF]

International Journal of Modern Physics D, 2012
We study the matter density fluctuations in the running cosmological constant (RCC) model using linear perturbations in the longitudinal gauge. Using this observable, we calculate the growth rate of structures and the matter power spectrum, and compare these results to SDSS data and the available data for linear growth rate.
openaire   +2 more sources

Book Symposium on Gregory of Nyssa's On the Human Image of God: An Appreciation of Responses

International Journal of Systematic Theology, EarlyView.
Abstract In response to the review essays by Rowan Williams, Morwenna Ludlow, Gabrielle Thomas, Paul Blowers and Martin Laird, this essay by John Behr addresses questions raised about translation methods and the complexities of understanding Gregory's rhetorical style as integral to his mode of writing theology.
John Behr
wiley   +1 more source

Future Stability of the FLRW Fluid Solutions in the Presence of a Positive Cosmological Constant [PDF]

, 2016
Todd A. Oliynyk
openalex   +1 more source

Architect of the Image: Argumentation, Economy and Translation in Gregory of Nyssa’s On the Human Image

International Journal of Systematic Theology, EarlyView.
Abstract In this contribution to a book symposium on Gregory of Nyssa’s On the Human Image, Morwenna Ludlow reflects on John Behr’s attention to the literary structure and argumentative flow of the book, its interplay with the similarly structured Timaeus of Plato and the difficulties of translating a work of such rhetorical and pastoral sophistication
Morwenna Ludlow
wiley   +1 more source

Quadrupole formulae with cosmological constant: comparison

Journal of High Energy Physics
We consider three different approaches (by Ashtekar, Bonga and Kesavan; Hoque and Virmani; and Dobkowski-Ryłko and Lewandowski) to investigate gravitational radiation produced by time changing matter source in de Sitter spacetime.
Denis Dobkowski-Ryłko, Jerzy Lewandowski   +1 more
doaj   +1 more source

Cosmology of a higher derivative scalar theory with non-minimal Maxwell coupling

European Physical Journal C: Particles and Fields, 2019
Higher derivative scalar field theory in curved space-time belongs to the GLPV theory coupled non-minimally to the Maxwell field is considered. We will show that the theory admits two independent exact de Sitter solutions in the FRW background, one ...
Shahab Shahidi
doaj   +1 more source

Cosmological Constant From Degenerate Vacua [PDF]

Physical Review Letters, 2002
Under the hypothesis that the cosmological constant vanishes in the true ground state with lowest possible energy density, we argue that the observed small but finite vacuum-like energy density can be explained if we consider a theory with two or more degenerate perturbative vacua, which are unstable due to quantum tunneling, and if we still live in ...
openaire   +3 more sources

Book Symposium Introduction: John Behr, Gregory of Nyssa: On the Human Image of God

International Journal of Systematic Theology, EarlyView.
Abstract This article introduces a series of response essays to John Behr’s Gregory of Nyssa: On the Human Image of God, which includes contributions from Rowan Williams, Morwenna Ludlow, Paul Blowers, Gabrielle Thomas and Martin Laird – with a final response from John Behr.
Thomas Breedlove, Alex Fogleman
wiley   +1 more source

Charged wormholes in (anti-)de Sitter spacetime

Physics Letters B
We present a family of charged, traversable wormhole solutions in the presence of a cosmological constant. In de Sitter spacetime, two types of wormhole throats can exist–referred to as typical and cosmological throat–located at small and large radial ...
Hyeong-Chan Kim, Wonwoo Lee
doaj   +1 more source

Inflation, the Higgs field and the resolution of the Cosmological Constant Paradox [PDF]

, 2017
Francesco De Martini
openalex   +1 more source