Results 61 to 70 of about 1,973 (175)

Transport properties in the Horndeski holographic two-currents model

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The transport features of the holographic two-currents model are investigated in the Horndeski gravity framework. This system displays metallic or insulating characteristics depending on whether the Horndeski coupling parameter $$\gamma $$ γ is negative ...
Dan Zhang   +4 more
doaj   +1 more source

Nature's Complexity Alive: Farewell to Several Unificatory Cosmological Arguments for Monism

open access: yesNoûs, EarlyView.
ABSTRACT Throughout history, numerous thinkers have claimed that monism—in the form of priority monism, existence monism, monotheistic monism, or versions that posit an extra‐cosmic ultimate being—theoretically surpasses pluralism, above all by positing a unified universe.
Lok‐Chi Chan
wiley   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

open access: yesExperimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Quantum cosmological models [PDF]

open access: yesClassical and Quantum Gravity, 2005
revised: now includes time asymmetry, black hole final state etc, 71 ...
openaire   +3 more sources

Uncertainty Quantification of Analytical Solutions for the Nonlinear Space and Time Fractional Order ϕ4$$ {\phi}^4 $$ Equation Under Fuzziness

open access: yesEngineering Reports, Volume 8, Issue 7, July 2026.
Analytical fuzzy soliton solutions of a modified space–time fractional ϕ4$$ {\phi}^4 $$ model are derived using EHFM, capturing memory effects and uncertainty. Results reveal diverse wave structures and show how fractional order and fuzziness significantly influence soliton amplitude, localization, and propagation, with heightened sensitivity near the ...
Mohsin Khalid   +3 more
wiley   +1 more source

Soft quantum back reaction to the hubble tension: A smeared-out early time cosmological energy density

open access: yesPhysics Letters B
A theoretical explanation for the so-called Hubble tension is provided within the framework of phase-space quantum mechanics extended to (quantum) cosmology.
Alex E. Bernardini
doaj   +1 more source

The Concept of Revolution in the Sciences: Michael Polanyi's Differences With Thomas Kuhn on Scientific Revolutions

open access: yesNatural Sciences, Volume 6, Issue 3, July 2026.
ABSTRACT Thomas Kuhn's The Structure of Scientific Revolutions (1962) was a blockbuster publication that problematized notions about the origins and nature of scientific revolutions. What became Kuhn's famous rubrics of “normal science” and “paradigms” were similar to concepts of “tacit knowledge” and scientific “frameworks” or “dogmas” in Michael ...
Mary Jo Nye
wiley   +1 more source

QUANTUM COSMOLOGIES AND THE “BEGINNING”

open access: yesZygon: Journal of Religion and Science, 1991
Abstract. The cosmology proposed by Stephen Hawking has been understood as support for an atheistic stance, due mainly to its view of the nature of time in combination with the absence of explicit boundary conditions. Against such a view, this article argues that one might develop a theistic understanding of the Universe in the context of Hawking's ...
openaire   +3 more sources

Equivalence of Models in Loop Quantum Cosmology and Group Field Theory

open access: yesUniverse, 2019
The paradigmatic models often used to highlight cosmological features of loop quantum gravity and group field theory are shown to be equivalent, in the sense that they are different realizations of the same model given by harmonic cosmology.
Bekir Baytaş   +2 more
doaj   +1 more source

Gravitational Fluctuations as an Alternative to Inflation III. Numerical Results

open access: yesUniverse, 2020
Power spectra play an important role in the theory of inflation, and their ability to reproduce current observational data to high accuracy is often considered a triumph of inflation, largely because of a lack of credible alternatives.
Herbert W. Hamber   +2 more
doaj   +1 more source

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