Suggested Topics within your search.
Showing 361 - 380 results of 392 for search '"cosmology"', query time: 0.05s Refine Results
  1. 361

    Effective dimensionality of space-time in f(R)-general relativity with quantum boundary terms included by Mauricio Bellini

    Published 2024-12-01
    “…To illustrate the theory, we calculate exactly the cosmological parameter in an early inflationary universe.…”
    Get full text
    Article
  2. 362

    The plurality of temporal reckoning among the Maya by William F. Hanks

    Published 2017-12-01
    “…Ritual practices display the most dramatic cyclicity, compounded by sedimentation, deictic time, historical time and cosmological space. Their chronometric dimensions are so elaborate that rituals can be considered a time machine. …”
    Get full text
    Article
  3. 363

    EGUP corrected thermodynamics of RN-AdS black hole with quintessence matter by Baoyu Tan

    Published 2025-02-01
    “…Reissner-Nordström anti de Sitter (RN-AdS) black hole, characterized by electric charge and negative cosmological constant, exhibits a rich thermodynamics structure. …”
    Get full text
    Article
  4. 364

    Non-Gaussianity from Particle Production during Inflation by Neil Barnaby

    Published 2010-01-01
    “…In this review we show that interactions between the produced particles and the inflaton condensate can lead to a qualitatively new mechanism for generating cosmological fluctuations from inflation. We illustrate this effect using a simple prototype model g2(ϕ−ϕ0)2χ2 for the interaction between the inflaton, ϕ, and iso-inflaton, χ. …”
    Get full text
    Article
  5. 365

    Geometrical Distances of Extragalactic Binaries through Spectroastrometry by Yu-Yang Songsheng, Jian-Min Wang, Yuan Cao, XueFei Chen, JianPing Xiong, Zhi-Xiang Zhang, Rong-Gen Cai

    Published 2025-01-01
    “…The growing “Hubble tension” has prompted the need for precise measurements of cosmological distances. This paper demonstrates a purely geometric approach for determining the distances to extragalactic binaries through a joint analysis of spectroastrometry (SA), radial velocity (RV), and light-curve (LC) observations. …”
    Get full text
    Article
  6. 366

    Dark QCD perspective inspired by strong CP problem at QCD scale by Bin Wang, Shinya Matsuzaki, Hiroyuki Ishida

    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.…”
    Get full text
    Article
  7. 367

    Singlet-doublet fermionic dark matter in gauge theory of baryons by Taramati, Rameswar Sahu, Utkarsh Patel, Kirtiman Ghosh, Sudhanwa Patra

    Published 2025-01-01
    “…We show that the model offers a viable parameter space for a cosmologically consistent DM candidate that can be probed through direct detection searches, collider experiments, and gravitational wave (GW) experiments.…”
    Get full text
    Article
  8. 368

    Dynamical System Analysis of Interacting Hessence Dark Energy in f(T) Gravity by Jyotirmay Das Mandal, Ujjal Debnath

    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). …”
    Get full text
    Article
  9. 369

    Deviations From μ‐τ Symmetry Using Δ27 Group on Neutrino Masses and Mixings by Ph. Wilina, N. Nimai Singh

    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.…”
    Get full text
    Article
  10. 370

    Finding Lensed Radio Sources with the Very Large Array Sky Survey by Michael N. Martinez, Yjan A. Gordon, Keith Bechtol, Gillian Cartwright, Peter S. Ferguson, Miranda Gorsuch

    Published 2025-01-01
    “…Radio observations of strongly lensed objects are valuable as cosmological probes. Lensed radio sources have proven difficult to identify, in large part due to the limited depth and angular resolution of the previous generation of radio sky surveys, and, as such, only a few dozen lensed radio sources are known. …”
    Get full text
    Article
  11. 371

    On the Evidence of Dynamical Dark Energy by Qing Gao, Zhiqian Peng, Shengqing Gao, Yungui Gong

    Published 2024-12-01
    “…In comparison to the CPL model, the tension with the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mo>Λ</mo></semantics></math></inline-formula>CDM model is reduced for the SSLCPL model, suggesting that the evidence for dynamical dark energy from DESI BAO data is dependent on cosmological models. The inclusion of spatial curvature has little impact on the results in the SSLCPL model.…”
    Get full text
    Article
  12. 372

    A Universal Break in Energy Functions of Three Hyperactive Repeating Fast Radio Bursts by Q. Wu, F. Y. Wang, Z. Y. Zhao, P. Wang, H. Xu, Y. K. Zhang, D. J. Zhou, J. R. Niu, W. Y. Wang, S. X. Yi, Z. Q. Hua, S. B. Zhang, J. L. Han, W. W. Zhu, K. J. Lee, D. Li, X. F. Wu, Z. G. Dai, B. Zhang

    Published 2025-01-01
    “…Fast radio bursts (FRBs) are millisecond-duration pulses occurring at cosmological distances with a mysterious origin. Observations show that at least some FRBs are produced by magnetars. …”
    Get full text
    Article
  13. 373

    Baryon Pasting the Uchuu Light-cone Simulation by Erwin T. Lau, Daisuke Nagai, Arya Farahi, Tomoaki Ishiyama, Hironao Miyatake, Ken Osato, Masato Shirasaki

    Published 2025-01-01
    “…Additionally, scatter in the thermal pressure and gas density profiles of halos enhances the X-ray and SZ power spectra, leading to biases in cosmological parameter estimates. These findings are statistically robust due to the extensive sky coverage and large halo sample in the BP-Uchuu maps. …”
    Get full text
    Article
  14. 374

    Intrinsic Pulse Widths of FRB 20121102A and Calculation of Broadening from Propagation and Instrumental Effects by Jia-Peng Wei, Yong-Feng Huang, Lang Cui, Xiang Liu, Jin-Jun Geng, Xue-Feng Wu

    Published 2025-01-01
    “…At a redshift of 0.193, the pulse width is broadened by a factor of approximately 0.16 due to cosmological time dilation. It is found that the instrumental broadening only contributes a fraction of 10 ^−3 –10 ^−1 to the observed pulse width. …”
    Get full text
    Article
  15. 375

    Phantom hairy black holes and wormholes in Einstein-bumblebee gravity by Chikun Ding, Changqing Liu, Yuehua Xiao, Jun Chen

    Published 2025-01-01
    “…When the bumblebee potential is linear, we find that the phantom potential and the Lagrange-multiplier $$\lambda $$ λ behave as a cosmological constant $$\Lambda $$ Λ .…”
    Get full text
    Article
  16. 376

    MUSEQuBES: Unveiling Cosmic Web Filaments at z ≈ 3.6 through Dual Absorption and Emission Line Analysis by Eshita Banerjee, Sowgat Muzahid, Joop Schaye, Sebastiano Cantalupo, Sean D. Johnson

    Published 2025-01-01
    “…According to modern cosmological models, galaxies are embedded within cosmic filaments, which supply a continuous flow of pristine gas, fueling star formation and driving their evolution. …”
    Get full text
    Article
  17. 377

    Warm non-minimally coupled Peccei–Quinn inflation and de Sitter Swampland conjecture by Jureeporn Yuennan, Phongpichit Channuie, Davood Momeni

    Published 2025-03-01
    “…By examining the slow-roll dynamics in these inflationary scenarios, we derive essential cosmological parameters, including the scalar spectral index and the tensor-to-scalar ratio. …”
    Get full text
    Article
  18. 378

    Toyin Falola and Akintunde Akinyemi (Eds). Encyclopedia of the Yoruba. Bloomington and Indianapolis: Indiana University Press, 2016. 371pp. by Ibrahim A. Odugbemi

    Published 2021-12-01
    “…Such concentrations of the entry include persons/personalities, demographics, worldviews and cosmological values and elements, and several material and non-material aspects of the Yorùbá culture and folklore, and their corresponding affiliates. …”
    Get full text
    Article
  19. 379

    La maison aux esprits : configurations spatiales, pluralité religieuse et syncrétismes dans l’espace domestique afro-cubain by Katerina Kerestetzi

    Published 2018-06-01
    “…What are the ritual, cosmological, and reflexive logics enabling such a transformation? …”
    Get full text
    Article
  20. 380

    Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures by Durmuş Demir

    Published 2019-01-01
    “…This setup, carrying fingerprints of trans-Planckian SUSY, predicts that gravity is Einstein (no higher-curvature terms), cosmic/gamma rays can originate from heavy NP scalars, and the UV cutoff might take right value to suppress the cosmological constant (alleviating fine-tuning with SUSY). …”
    Get full text
    Article