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- Physics 1
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21
Extensive composable entropy for the analysis of cosmological data
Published 2025-02-01“…An entropy is composable if it satisfies that the entropy SA of a system A=B×C consisting of two statistically independent parts B and C is given in a consistent way as SA=Φ(SB,SC) where the composition function Φ(x,y) is obtained from group-theory.We further show that (α,γ)=(1,2/3) satisfactorily agrees with cosmological data measuring neutrinos, Big Bang nucleosynthesis and the relic abundance of cold dark matter particles, as well as dynamical and geometrical cosmological data sets.…”
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22
Autoencoder Reconstruction of Cosmological Microlensing Magnification Maps
Published 2025-01-01“…Enhanced modeling of microlensing variations in light curves of strongly lensed quasars improves measurements of cosmological time delays, the Hubble Constant, and quasar structure. …”
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23
Differential equations and recursive solutions for cosmological amplitudes
Published 2025-01-01Subjects: “…Cosmological models…”
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24
Rational Ruijsenaars-Schneider model with cosmological constant
Published 2025-01-01“…It is shown that amendments including a cosmological constant are feasible for the rational variant, while the hyperbolic and trigonometric systems are ruled out by our analysis. …”
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25
Grand unification at the cosmological collider with chemical potential
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26
Cosmology in the Universe with Distance Dependent Lorentz-Violating Background
Published 2017-01-01“…We consider a cosmological setup with inflaton in the presence of a redshift dependent Lorentz-violating time-like background to address the inflationary regime and other phases of the Universe. …”
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27
COSMOLOGY OF TIME AND THE SPIRITUAL OF LIFE IN JANAVESE-ISLAMIC TRADITION
Published 2021-12-01“…This study aims to see and analyze the cosmological relation between time and spiritual life in the Javanese-Islamic tradition. …”
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28
A cosmological reconstruction of the Higgs vacuum expectation value
Published 2024-12-01“…The coefficient of the quadratic term in the self-interaction potential has an evolution and it leads to a cosmic variation of proton-to-electron mass ratio, $$\mu $$ μ . We perform a cosmological reconstruction from the kinematic parameter jerk and discuss a few cosmological consequences of the theory. …”
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29
Low-Redshift Observational Constraints on Dark Energy Cosmologies
Published 2023-10-01Subjects: “…cosmology…”
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30
The Existence and Effect of Dark Energy Redshift on Cosmological Age
Published 2020-01-01“…A derivation of Cosmological Age explicitly constrained by Cosmic Microwave Background Radiation (CMBR) is presented, demonstrating that the correct value of Cosmological Age is equal to the Hubble Age. …”
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31
Juvenile Cosmology; Or Richard Powers’ Post-Global Doughnut
Published 2010-02-01“…Moving from the Aristotelean to the Einsteinian, Operation Wandering Soul’s terrain is cosmological, while its narrative collapses time/space into an exhibition of something like Richard Feynman’s “sum over the histories” made up of proliferating versions of juvenile massings and vain pilgrimages. …”
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32
Dark Matter and Dark Energy Cosmologies and Alternative Theories of Gravitation
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33
Some Friedmann cosmological solutions in the scale covariant theory of gravitation
Published 1991-01-01Subjects: Get full text
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34
Dynamical systems of modified Gauss–Bonnet gravity: cosmological implications
Published 2025-01-01“…The linear perturbations around the fixed points are studied to explore the corresponding stability of points. The cosmological implications are studied in $$f(R,G)=f_0R^nG^{1-n}$$ f ( R , G ) = f 0 R n G 1 - n and $$f(R,G)=f_0R^\alpha +f_1G^\beta $$ f ( R , G ) = f 0 R α + f 1 G β models to identify the qualitative evolution of universe with the flat-FRW spacetime. …”
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35
A Cohesive Deep Drilling Field Strategy for LSST Cosmology
Published 2024-01-01Subjects: “…Cosmology…”
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36
A Cosmological Scaling Relation for Describing the Late Time Dynamics
Published 2013-01-01“…The corresponding equation of state reduces to a cosmological constant at early times and evolves in terms of the apparent horizon at late times.…”
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37
Fab Four: When John and George Play Gravitation and Cosmology
Published 2012-01-01“…Further generalizations lead to a tensor-scalar theory, dubbed the “Fab Four,” with only first and second order derivatives of the fields in the equations of motion that self-tune to a vanishing cosmological constant. This model needs to be confronted with experimental data in order to constrain its large parameter space. …”
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38
Naxi Cosmology of Mt Yulong Sacred Sites with Caveats for Conservation
Published 2022-06-01Subjects: Get full text
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39
Solar System Motions and the Cosmological Constant: A New Approach
Published 2008-01-01“…Our conclusions hold also for any other metric perturbation having the same dependence on the spatial coordinates, as those induced by other general relativistic cosmological scenarios and by many modified models of gravity. …”
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40
Improving the Determination of Supernova Cosmological Redshifts by Using Galaxy Groups
Published 2025-01-01Subjects: “…Cosmology…”
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