Results 81 to 90 of about 1,305 (201)
An approach to the cosmological constant problem(s)
Physics Letters B, 2005 Talk given at Rencontres de Moriond, 2004 by G.L ...
Kane, Gordon L. +2 more
openaire +2 more sources
The Weinberg no-go theorem for cosmological constant and nonlocal gravity
Physics Letters BWe show how a nonlocal gravitational interaction can circumvent the Weinberg no-go theorem on cosmological constant, which forbids the existence of any solution to the cosmological constant problem within the context of local field theories unless some ...
Salvatore Capozziello +2 more
doaj +1 more source
A Ch'ixi Philosophy of History: Rivera Cusicanqui After Benjamin
Constellations, EarlyView.
Daniel Luna Jacobs
wiley +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract The Ames impact structure (Oklahoma) is thought to have formed during the Ordovician Meteor Event, based on conodont biostratigraphy of its crater fill. Here, U–Pb zircon dates from its impact‐melt portion, conducted using secondary ion mass spectrometry and laser ablation–inductively coupled plasma–mass spectrometry (n = 37 spots), yield a ...
Elizabeth J. Catlos +9 more
wiley +1 more source
Cosmic clues: DESI, dark energy, and the cosmological constant problem
Journal of High Energy PhysicsSeveral attempts to solve the cosmological constant problem, which concerns the value of the cosmological constant being extremely smaller than the Standard Model mass scales, have introduced a scalar field with a very flat potential that can be ...
Wen Yin
doaj +1 more source
The 40K‐K dating system: 1. Improving data interpretation using new model calculations
Meteoritics &Planetary Science, EarlyView.Abstract The 40K‐K cosmic‐ray exposure (CRE) dating system offers a promising method for determining exposure ages of iron meteorites by combining the radioactive cosmogenic 40K with the stable cosmogenic isotopes 39K and 41K. However, earlier applications relied on semi‐empirical production models and inconsistent analytical data sets, limiting their ...
Farshid Nozarian +2 more
wiley +1 more source
Fine Structure of Dark Energy and New Physics
Advances in High Energy Physics, 2007 Following our recent work on the cosmological constant problem, in this letter we make a specific proposal regarding the fine structure (i.e., the spectrum) of dark energy.
Vishnu Jejjala +2 more
doaj +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract We present the first micrometer‐scale, phase‐resolved compositional characterization of impact melt glass from the Hapcheon crater (~1.4 km apparent diameter), the first confirmed impact structure on the Korean Peninsula, integrating EPMA‐WDS (5 μm spot), confocal Raman spectroscopy (<1 μm spot), XRD, and 40Ar/39Ar step‐heating geochronology ...
Jin‐Young Lee +2 more
wiley +1 more source
THE COSMOLOGICAL CONSTANT PROBLEM: A USER'S GUIDE [PDF]
International Journal of Modern Physics D, 2009 We discuss the validity of general relativity at low energy and relate the threshold below which the theory breaks down to the observed value of the cosmological constant. This suggests the existence of a mass scale of [Formula: see text] and a putative violation of the equivalence principle at about the 10−14 level.
openaire +3 more sources
Extracting vitalities: Cuts in Indigenous women's bodies‐territories (Brazil)
Medical Anthropology Quarterly, EarlyView.Abstract In this article, I explore the connections between the medicalization of childbirth and environmental devastation through Guarani‐Mbyá understandings of life and the living. I argue that the cuts made to Guarani‐Mbyá women's vaginas (episiotomies) in Brazilian hospitals are experienced and situated on the same cosmopolitical level as the cuts ...
Maria Paula Prates
wiley +1 more source