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- Physics 1
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261
The influence of density models on wormhole formation in Finsler–Barthel–Randers geometry
Published 2024-12-01“…Finsler geometry, as a generalization of Riemannian geometry, allows for the incorporation of anisotropic characteristics, making it a valuable tool in exploring cosmological phenomena. By employing osculating Riemannian space approaches, we develop wormhole models under non-commutative geometry and power-law energy density distributions. …”
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262
Irreversible Thermodynamic Description of Dark Matter and Radiation Creation during Inflationary Reheating
Published 2017-01-01“…The values of the energy densities of relativistic matter and dark matter reach their maximum when the Universe is reheated up to the reheating temperature, which is obtained as a function of the scalar field decay width, the scalar field particle mass, and the cosmological parameters. Particle production leads to the acceleration of the Universe during the reheating phase, with the deceleration parameter showing complex dynamics. …”
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263
Greybody factor and quasinormal modes of scalar and Dirac field perturbation in Schwarzschild-de Sitter-like black hole in Bumblebee gravity model
Published 2024-12-01“…The impact of Lorentz invariance violation parameter L and cosmological constant $$\varLambda $$ Λ to the effective potential, greybody factors and quasinormal modes are analyzed for different modes. …”
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264
Phenomenology of keV scale sterile neutrino dark matter with S4 flavor symmetry
Published 2020-01-01“…We constrain the parameter space of the model from the latest cosmological bounds on the mass of the dark matter and DM-active mixing.…”
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265
Effective dimensionality of space-time in f(R)-general relativity with quantum boundary terms included
Published 2024-12-01“…To illustrate the theory, we calculate exactly the cosmological parameter in an early inflationary universe.…”
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266
Factorization of the Hilbert space of eternal black holes in general relativity
Published 2025-01-01“…Abstract We generalize recent results in two-dimensional Jackiw-Teitelboim gravity to study factorization of the Hilbert space of eternal black holes in quantum gravity with a negative cosmological constant in any dimension. We approach the problem by computing the trace of two-sided observables as a sum over a recently constructed family of semiclassically well-controlled black hole microstates. …”
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267
Hooks, Lines, and Sinkers: How Active Galactic Nucleus Feedback and Cosmic-Ray Transport Shape the Far-infrared–Radio Correlation of Galaxies
Published 2025-01-01“…While many theories have been proposed in order to explain the emergence and maintenance of the FRC across a gamut of galaxy properties and redshift, the nonlinear physics at play remain unexplored in full complexity and within a cosmological context. We present the first reproduction of the z ∼ 0 FRC using detailed synthetic observations of state-of-the-art cosmological zoom-in simulations from the Feedback in Realistic Environments (FIRE-3) suite with explicitly evolved CR proton and electron (CRe) spectra, for three models for CR transport and multichannel active galactic nucleus (AGN) feedback. …”
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268
The Eternal Return. Apocatastasis and its Manifestations in Ancient Philosophies: Pythagoreanism, Stoicism, Zoroastrianism, Platonism and Gnosticism
Published 2024-12-01“…In Pythagoreanism and Stoicism, apocatastasis is closely linked to cosmological cyclicity, implying the periodic renewal of the universe. …”
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269
Dynamical System Analysis of Interacting Hessence Dark Energy in f(T) Gravity
Published 2017-01-01“…Interestingly, the analysis shows that the universe may resemble the “cosmological constant” like evolution (i.e., ΛCDM model is a subset of the solution set). …”
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270
Vacuum energy density from the form factor bootstrap
Published 2024-12-01“…If we assume the observed Cosmological Constant originates from the vacuum energy density ρ vac computed as proposed here, then this suggests there must exist a particle which does not obtain its mass from spontaneous symmetry breaking in the electro-weak sector, which we designate as the “zeron”. …”
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271
Probing late-time annihilations of oscillating asymmetric dark matter via rotation curves of galaxies
Published 2025-02-01“…Abstract In this paper, we explore the Oscillating Asymmetric Dark Matter (OADM) model to address the core-cusp problem, aiming to resolve the discrepancy between the predictions of the $$\Lambda \textrm{CDM}$$ Λ CDM cosmological model and the observed dark matter profiles in dwarf spheroidal galaxies. …”
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272
Unveiling the Universe: Tsallis Holographic Dark Energy and Modified Logarithmic f(R) Gravity
Published 2024-11-01“…The exponential scale factor is known for its simplicity and relevance in cosmological models that exhibit a constant rate of expansion. …”
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273
Dark QCD perspective inspired by strong CP problem at QCD scale
Published 2025-01-01“…We also briefly address nontrivial cosmological aspects, such as those related to the dark-chiral phase transition, the dark matter production, and an ultraviolet completion related to the ultralight ALP.…”
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274
Bound states of massive complex ghosts in superrenormalizable quantum gravity theories
Published 2025-01-01“…Finally, we discuss the cosmological implications of such a ghost confinement.…”
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275
Deviations From μ‐τ Symmetry Using Δ27 Group on Neutrino Masses and Mixings
Published 2024-01-01“…The sum of the three absolute neutrino mass eigenvalues, ∑imi (i=1,2,3), is found to be consistent with the value given by the latest Planck cosmological data, ∑imi<0.12 eV. The model further predicts effective neutrino masses for neutrinoless double beta decay, 4.15 meV≤mee≤30.6 meV; tritium beta decay, 8.4 meV≤mβ≤30.5 meV; Jarlskog invariant, JCP=±0.022 for CP violation; baryon asymmetry YB=1.15×10−10 for normal hierarchical case; and also 49.5 meV≤mee≤51.7 meV, 49.5 meV≤mβ≤51.4 meV, JCP=±0.022, and YB=1.12×10−10 for inverted hierarchical case, respectively.…”
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276
Background-induced forces from dark relics
Published 2025-01-01“…We compute the forces in the case of dark particles densities that may realistically occur in cosmology, assuming either (i) cosmically homogeneous or (ii) virialized phase space distributions. …”
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277
Central AdS Generalized Ay{\'o}n-Beato-Garc{\'\i}a Black Holes and Joule-Thomson Expansion
Published 2022-10-01“…\textcolor[rgb]{0.00,0.00,1.00}{Thus we not need to use anadditional cosmological parameter coming from ADS/CFTcorrespondence for production of pressure coordinate in the blackhole equation of state. …”
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278
The Observer’s Guide to the Gamma-Ray Burst Supernova Connection
Published 2017-01-01“…We discuss their photometric and spectroscopic properties, their role as cosmological probes, including their measured luminosity–decline relationships, and how they can be used to measure the Hubble constant. …”
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279
Reconstruction of the scalar field potential in nonmetricity gravity through Gaussian processes
Published 2025-01-01“…The accelerated expansion of the universe has been widely confirmed, posing challenges to the standard Λ CDM model, particularly the cosmological coincidence problem. This has motivated the exploration of modified gravity theories, including nonmetricity gravity, which explains cosmic acceleration without dark energy. …”
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280