Results 101 to 110 of about 52,296 (249)
Fortschritte der Physik, Volume 73, Issue 8, August 2025.Abstract In this study, the properties, equilibrium, and stability of compact objects within the framework of teleparallel gravity with the generalized MIT bag model are investigated. By incorporating the modified field equations, the influence of the generalized bag constant on the structure and physical characteristics of quark stars and neutron ...
Sayantan Ghosh +2 more
wiley +1 more source
Particle pair creation by inflation of quantum vacuum fluctuations in an ion trap
, 2019 The creation of matter and structure in our universe is currently described by an intricate interplay of quantum field theory and general relativity.
Fey, Christian +7 more
core +1 more source
Te Vacancy‐Driven Anomalous Transport in ZrTe5 and HfTe5
Advanced Physics Research, Volume 4, Issue 7, July 2025.Less is more! Recent discoveries in topological quantum materials have rekindled excitement for direct observation of quantum anomalies in a condensed matter physics laboratory, which is historically intractable in particle and cosmological physics. Using atomistic modeling this study sheds light on the source of the anomalous transport properties that
Elizabeth A. Peterson +2 more
wiley +1 more source
Living Reviews in Relativity, 2004 The observable universe could be a 1+3-surface (the "brane") embedded in a 1+3+$d$-dimensional spacetime (the "bulk"), with Standard Model particles and fields trapped on the brane while gravity is free to access the bulk.
Maartens Roy
doaj
Averaged null energy condition in Loop Quantum Cosmology
, 2008 Wormhole and time machine are very interesting objects in general relativity. However, they need exotic matters which are impossible in classical level to support them.
C. Rovelli +5 more
core +1 more source
Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.Abstract The geology of a potential Artemis landing site on Mons Malapert is examined using remote sensing techniques and lessons learned from Apollo missions to the lunar surface. Orthomosaics, digital terrain models, illumination models, thermal conditions, crater size‐frequency distribution analyses, geomorphological mapping, spectral and ...
David A. Kring +21 more
wiley +1 more source
Universal Constants, Standard Models and Fundamental Metrology
, 2009 Taking into account four universal constants, namely the Planck's constant $h$, the velocity of light $c$, the constant of gravitation $G$ and the Boltzmann's constant $k$ leads to structuring theoretical physics in terms of three theories each taking ...
Cohen-Tannoudji, G.
core +1 more source
Deep Space Network Radio Science and Ground‐Based Planetary Radar in the Next Decade
Radio Science, Volume 60, Issue 7, July 2025.Abstract The Deep Space Network (DSN) has been a core operational element of NASA's crewed and robotic exploration of the Solar System since the early 1960s. The primary role of the DSN has been to acquire telemetry and navigation data, but over the years, its radiometric and radar capabilities have expanded to form a system for obtaining unique ...
R. S. Park +13 more
wiley +1 more source
Living Reviews in Relativity, 2008 Quantum gravity is expected to be necessary in order to understand situations in which classical general relativity breaks down. In particular in cosmology one has to deal with initial singularities, i.e., the fact that the backward evolution of a ...
Bojowald Martin
doaj
Generalized non-local R 2-like inflation
Journal of High Energy Physics, 2023 The R 2 inflation which is an extension of general relativity (GR) by quadratic scalar curvature introduces a quasi-de Sitter expansion of the early Universe governed by Ricci scalar being an eigenmode of d’Alembertian operator.
Alexey S. Koshelev +2 more
doaj +1 more source