Results 41 to 50 of about 193,127 (291)

‘Turkeys Cannot Vote for Christmas’: Why Epistemic Disobedience in an Anti‐Black World Matters

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT Never in the history of global coloniality has the idea of epistemic disobedience been as important as in the 21st century. This is not only because the struggle for decolonisation has shifted from physical confrontation between the coloniser and the colonised into a battle of ideas but also because the former has deployed the idea of ...
Morgan Ndlovu
wiley   +1 more source

Cosmological Implications of the Extended Uncertainty Principle: Energy Conditions, Stability, and Late-time Acceleration

open access: yesThe Astrophysical Journal
We study the cosmological consequences of the extended uncertainty principle (EUP) by deriving modified Friedmann equations through thermodynamic arguments.
M. Roushan, N. Rashidi
doaj   +1 more source

Polynomial Affine Model of Gravity: After 10 Years

open access: yesUniverse
The polynomial affine model of gravity was proposed as an alternative to metric and metric-affine gravitational models. What, in the beginning, was thought to be a source of unpredictability—the presence of many terms in the action—turned out to be a ...
Oscar Castillo-Felisola   +6 more
doaj   +1 more source

Dynamical Analysis of Scalar Field Cosmologies with Spatial Curvature

open access: yesThe Open Journal of Astrophysics, 2016
We explore the dynamical behaviour of cosmological models involving a scalar field (with an exponential potential and a canonical kinetic term) and a matter fluid with spatial curvature included in the equations of motion.
Mateja Gosenca, Peter Coles
doaj   +1 more source

Backreaction in Cosmological Models [PDF]

open access: yes, 1999
Most cosmological models studied today are based on the assumption of homogeneity and isotropy. Observationally one can find evidence that supports these assumptions on very large scales, the strongest being the almost isotropy of the Cosmic Microwave ...
Buchert, Thomas   +2 more
core   +2 more sources

Work Versus Force: Simultaneous Processes for Describing Interactions

open access: yesAdvanced Physics Research, EarlyView.
ABSTRACT Achieving a unified description of interactions remains an open challenge in theoretical physics, which currently describes four fundamental forces. This situation may be viewed differently when interactions are formulated in terms of processes (work as actio) rather than forces (force as actio), not only at the macroscopic level but also at ...
Grit Kalies   +2 more
wiley   +1 more source

States of low energy in the Schwinger effect

open access: yesJournal of High Energy Physics, 2023
States of low energy in cosmology minimise the energy density when smeared in a chosen time interval. We extend such construction to generic homogeneous (possibly anisotropic) particle creation settings.
Álvaro Álvarez-Domínguez   +3 more
doaj   +1 more source

Inhomogeneous cosmologies, the Copernican principle and the cosmic microwave background: More on the EGS theorem [PDF]

open access: yes, 2003
We discuss inhomogeneous cosmological models which satisfy the Copernican principle. We construct some inhomogeneous cosmological models starting from the ansatz that the all the observers in the models view an isotropic cosmic microwave background.
A. A. Coley   +44 more
core   +2 more sources

The morphology of the oval window in Paranthropus robustus compared to humans and other modern primates

open access: yesThe Anatomical Record, EarlyView.
Abstract The oval window (OW) is an opening connecting the inner and middle ear. Its area has been shown to consistently scale with body mass (BM) in primates, and has been used alongside semi‐circular canal (SCC) size to differentiate Homo sapiens and fossil hominins, including Paranthropus robustus.
Ruy Fernandez, José Braga
wiley   +1 more source

Constraining on the non-standard cosmological models combining the observations of high-redshift quasars and BAO

open access: yesEuropean Physical Journal C: Particles and Fields
In this work, we studied four types of cosmological models with different mechanisms driving the accelerated expansion of the universe, include Braneworld models, Chaplygin Gas models, Emergent Dark Energy models, and cosmological torsion models ...
Ziqiang Liu   +4 more
doaj   +1 more source

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