Results 51 to 60 of about 385,645 (329)
The FAST Project - A Next Generation UHECR Observatory
EPJ Web of Conferences, 2017 We present a concept for large-area, low-cost detection of ultrahigh-energy cosmic rays (UHECRs) with a Fluorescence detector Array of Single-pixel Telescopes (FAST)b, addressing the requirements for the next generation of UHECR experiments.
Fujii Toshihiro +15 more
doaj +1 more source
Vacuum energy with mass generation and Higgs bosons
Physics Letters B, 2020 We discuss the Higgs mass and cosmological constant hierarchy puzzles with emphasis on the interplay of Poincaré invariance, mass generation and renormalization group invariance.
Steven D. Bass, Janina Krzysiak
doaj +1 more source
Non-minimal coupling influence on the deviation from de Sitter cosmological expansion
, 2018 We investigate the models of cosmological inflation in generalized scalar-tensor gravity, which we consider as a source of deviation from de Sitter dynamics in the case of GR.
Chervon, Sergey V., Fomin, Igor V.
core +1 more source
Physical Review D, 2004 The evidence for the accelerated expansion of the universe and the time-dependence of the fine-structure constant suggests the existence of at least one scalar field with a mass of order H_0. If such a field exists, then it is generally assumed that its coupling to matter must be tuned to unnaturally small values in order to satisfy the tests of the ...
Khoury, Justin, Weltman, Amanda
openaire +2 more sources
Physical Review D, 2010 We develop a fully covariant, well-posed 5D effective action for the 6D cascading gravity brane-world model, and use this to study cosmological solutions. We obtain this effective action through the 6D decoupling limit, in which an additional scalar degree mode, , called the brane-bending mode, determines the bulk-brane gravitational interaction. The
Agarwal, Nishant +3 more
openaire +3 more sources
The Anatomical Record, EarlyView.Abstract The oval window (OW) is an opening connecting the inner and middle ear. Its area has been shown to consistently scale with body mass (BM) in primates, and has been used alongside semi‐circular canal (SCC) size to differentiate Homo sapiens and fossil hominins, including Paranthropus robustus.
Ruy Fernandez, José Braga
wiley +1 more source
Journal of High Energy PhysicsCosmological gravitational particle production (GPP) is a generic mechanism by which particles are produced during the inflationary epoch. In this work we consider the GPP of massive scalars in an effort to fully understand the spectrum of the produced ...
Leah Jenks, Edward W. Kolb, Keyer Thyme
doaj +1 more source
Elongated Gravity Sources as an Analytical Limit for Flat Galaxy Rotation Curves
Universe, 2021 The flattening of spiral-galaxy rotation curves is unnatural in view of the expectations from Kepler’s third law and a central mass. It is interesting, however, that the radius-independence velocity is what one expects in one less dimension. In our three-
Felipe J. Llanes-Estrada
doaj +1 more source
Cosmological solutions, p-branes and the Wheeler-DeWitt equation [PDF]
, 1997 The low energy effective actions which arise from string theory or M-theory are considered in the cosmological context, where the graviton, dilaton and antisymmetric tensor field strengths depend only on time.
A. A. Kehagias +27 more
core +2 more sources
Archaeology in Oceania, EarlyView.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 +17 more
wiley +1 more source