Results 121 to 130 of about 58,534 (245)

Cosmology of a higher derivative scalar theory with non-minimal Maxwell coupling

European Physical Journal C: Particles and Fields, 2019
Higher derivative scalar field theory in curved space-time belongs to the GLPV theory coupled non-minimally to the Maxwell field is considered. We will show that the theory admits two independent exact de Sitter solutions in the FRW background, one ...
Shahab Shahidi
doaj   +1 more source

Universal Entanglement and an Information‐Complete Quantum Theory

Advanced Physics Research, Volume 5, Issue 4, April 2026.
This Perspective summarize an informationcomplete quantum theory which describes a fully quantum world without any classical systems and concepts. Here spacetime/gravity, having to be a physical quantum system, universally entangles matter (matter fermions and their gauge fields) as an indivisible trinity, and encodes information‐complete physical ...
Zeng‐Bing Chen
wiley   +1 more source

Gleaning the Rocky Shore? 2500 Years of Coastal Resource Use at Red Bluff 1, GunaiKurnai Country, SE Australia

Archaeology in Oceania, Volume 61, Issue 1, Page 128-161, April 2026.
ABSTRACT Shell middens in Gippsland along the eastern half of Victoria's coastline have usually been characterised as small, short‐duration camp sites with relatively low shell densities and low taxonomic diversity. Here we present new excavation results from a dense, high‐diversity site at Red Bluff near the eastern end of GunaiKurnai Country, a ...
Patrick Faulkner, Bruno David, David M. Kennedy, Fiona Petchey, Joanna Fresløv, Ashleigh J. Rogers, Jillian Garvey, Rachel Kirby, Runjie Yuan, Russell Mullett, John Stanisic, Kyne Krusic‐Golub, V. Ruth Pullin, Matthew C. McDowell, Robert J. Skelly, Anthony Romano, Vanessa N. L. Wong, GunaiKurnai Land and Waters Aboriginal Corporation   +17 more
wiley   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

TASI Lectures on Cosmological Perturbations

, 2013
We present a self-contained summary of the theory of linear cosmological perturbations. We emphasize the effect of the six parameters of the minimal cosmological model, first, on the spectrum of Cosmic Microwave Background temperature anisotropies, and ...
Lesgourgues, Julien
core   +1 more source

Impact of Quantum Gravity on the UV Sensitivity of Extremal Black Holes

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
ABSTRACT Recent work has revealed that extremal Kerr black holes may exhibit a sensitivity to higher‐derivative corrections to Einstein's equations, displaying singularities in the tidal forces at the horizon. However, in a purely gravitational context, this “ultraviolet sensitivity” translates into a strong dependence on the Wilson coefficients in the
Francesco Del Porro, Francesco Ferrarin, Alessia Platania   +2 more
wiley   +1 more source

Kaniadakis Holographic Dark Energy Behavior in f(Q) Theory

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
ABSTRACT In this study, the cosmological behavior of the Kaniadakis holographic dark energy model is investigated under the f(Q)$f(Q)$ theory within the framework of a flat Friedmann–Robertson–Walker (FRW) universe. The generalized holographic energy density based on Kaniadakis entropy is modeled using the Hubble horizon infrared cutoff scale, and the ...
Sinem Kalkan, Can Aktaş
wiley   +1 more source

A Computationally Efficient Method for Deriving Instantaneous F2 Layer Peak Parameters From Climatological Maps and TEC Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract International Reference Ionosphere (IRI) and the Ionosphere‐Plasmasphere (IRI‐Plas) models describe monthly median ionospheric conditions. IRI‐Plas, unlike IRI, allows one to include instantaneous Total Electron Content observations (TEC) to adjust the median predictions. The standard IRI‐Plas generates monthly medians of foF2m, hmF2m and TECm
T. L. Gulyaeva, F. Arikan, M. Hernández‐Pajares, I. Stanislawska, A. M. Padokhin   +4 more
wiley   +1 more source

A New Orthogonal Geomagnetic Coordinate System: The Generalized Eccentric Dipole

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The study of near‐Earth plasma environment relies heavily on accurate geomagnetic coordinate systems, mainly because the plasma motion is controlled by the E×B $\boldsymbol{E}\times \boldsymbol{B}$ drift and thus is constrained by the structure of the magnetic field.
Antoine Resseguier, Pierre‐Louis Blelly, Aurélie Marchaudon   +2 more
wiley   +1 more source

Gauge-invariant cosmological perturbations in general teleparallel gravity

European Physical Journal C: Particles and Fields
We study linear cosmological perturbations in the most general teleparallel gravity setting, where gravity is mediated by the torsion and nonmetricity of a flat connection alongside the metric.
Lavinia Heisenberg, Manuel Hohmann
doaj   +1 more source