Results 111 to 120 of about 17,761 (262)
Bootstrap Techniques in Flat Space and Cosmology
, 2023 The scientific understanding of the Universe is evolving at a rapid pace. Each new experiment yields more and more accurate measurements of its fundamental parameters. The standard cosmological model postulates a very early period of fast expansion, but the details of its underlying mechanism remain hidden behind a veil of high energies that we cannot ...
openaire +1 more source
Feminist Anthropology, Volume 7, Issue 1, May 2026.Abstract This article explores how Afro‐Brazilian communities in Pernambuco respond to state‐led industrial development through culturally rooted practices of resistance and repair. Drawing on archival and ethnographic research in the coastal municipalities of Cabo de Santo Agostinho and Ipojuca, this study traces the effects of Brazil's large‐scale ...
Shelly Annette Biesel
wiley +1 more source
Homogeneous and isotropic cosmology in general teleparallel gravity. [PDF]
Eur Phys J C Part Fields, 2023 Heisenberg L, Hohmann M, Kuhn S.
europepmc +1 more source
Horizon, homogeneity and flatness problems -- do their resolutions really depend upon inflation?
, 2018 We argue that the horizon problem arises in world models based on Robertson-Walker line element where homogeneity and isotropy (cosmological principle) is guaranteed at all epochs.
Singal, Ashok K.
core
Deforming the Double‐Scaled SYK and Reaching the Stretched Horizon From Finite Cutoff Holography
Fortschritte der Physik, Volume 74, Issue 5, May 2026.ABSTRACT We study the properties of the double‐scaled SYK (DSSYK) model under chord Hamiltonian deformations based on finite cutoff holography for general dilaton gravity theories with Dirichlet boundaries. The formalism immediately incorporates a lower‐dimensional analog of TT¯(+Λ2)$\text{T}\overline{\text{T}}(+\Lambda _2)$ deformations, denoted T2 ...
Sergio E. Aguilar‐Gutierrez
wiley +1 more source
Autoparallels and the Inverse Problem of the Calculus of Variations
Fortschritte der Physik, Volume 74, Issue 5, May 2026.ABSTRACT We prove that autoparallel curves associated with a torsion‐free but not necessarily metric‐compatible affine connection can be derived from an action principle. We explicitly construct the action functional and show by standard variational techniques that it produces the desired equations.
Lavinia Heisenberg
wiley +1 more source
Soft X‐Ray Emission From Saturn's Magnetosheath II: Solar Wind Driving
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract Saturn's magnetosphere is dominated by Enceladus‐sourced neutrals, which spread throughout the system into the magnetosheath. The neutrals can charge exchange with highly charged solar wind ions, causing soft X‐ray emission (<2 ${< } 2$ keV) upon de‐excitation of the ion.
D. Naylor +4 more
wiley +1 more source
Constraints on Non-Flat Starobinsky f(R) Dark Energy Model. [PDF]
Entropy (Basel), 2021 Geng CQ, Hsu YT, Lu JR.
europepmc +1 more source
Soft X‐Ray Emission From Saturn's Magnetosheath Part I: 3D Modeling From MHD Data
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract Saturn's magnetosheath hosts a mixed population of water‐group neutrals and solar wind plasma. We present a 3‐D model of soft X‐ray emission by ion‐neutral charge exchange in the near‐equatorial magnetosheath. The model employs MHD simulation data of plasma properties at Saturn, Enceladus‐genic neutral populations extrapolated from existing ...
P. C. Rogan +6 more
wiley +1 more source
100 years of mathematical cosmology: Models, theories and problems, Part B. [PDF]
Philos Trans A Math Phys Eng Sci, 2022 Cotsakis S, Yefremov AP.
europepmc +1 more source