Results 51 to 60 of about 21,978 (196)

Polynomial $f(R)$ Palatini cosmology -- dynamical system approach

open access: yes, 2017
We investigate cosmological dynamics based on $f(R)$ gravity in the Palatini formulation. In this study we use the dynamical system methods. We show that the evolution of the Friedmann equation reduces to the form of the piece-wise smooth dynamical ...
Stachowski, Aleksander   +1 more
core   +1 more source

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos   +5 more
wiley   +1 more source

Cosmology tests in rare kaon decays

open access: yes, 2016
The Standard Model (SM) of particle physics is an extremely successful theory that effectively describes strong and electroweak interactions up to the energies presently accessible.
V. Duk
semanticscholar   +1 more source

Sun heated MeV-scale dark matter and the XENON1T electron recoil excess

open access: yesJournal of High Energy Physics, 2021
The XENON1T collaboration reported an excess of the low-energy electron recoil events between 1 and 7 keV. We explore the possibility to explain such an anomaly by the MeV-scale dark matter (DM) heated by the interior of the Sun due to the same DM ...
Yifan Chen   +5 more
doaj   +1 more source

Conformal transformations and Nordstr\"om's scalar theory of gravity

open access: yes, 2010
As we shall briefly recall, Nordstr\"om's theory of gravity is observationally ruled out. It is however an interesting example of non-minimal coupling of matter to gravity and of the role of conformal transformations.
Deruelle, Nathalie, Sasaki, Misao
core   +1 more source

Lonergan, Decolonization and First Nations Peoples: An Apologetic from an Insider on the Outside

open access: yesModern Theology, EarlyView.
Abstract The purpose of this article is to respond critically to a research project initiated out of the Board of the Lonergan Research Institute that seeks to expose colonialist assumptions in Lonergan's thought. Some of the initiatives seek to link Lonergan with complicity in Canadian residential schools, spiritual violence, and cultural genocide ...
John D. Dadosky
wiley   +1 more source

Inert scalar dark matter in an extra dimension inspired model

open access: yes, 2014
In this paper we analyze a dark matter model inspired by theories with extra dimensions. The dark matter candidate corresponds to the first Kaluza-Klein mode of a real scalar added to the Standard Model.
Lineros, R. A.   +1 more
core   +1 more source

Messing with Methods: Doing Anthropology in Uncertain Times

open access: yesThe Australian Journal of Anthropology, EarlyView.
Abstract The introduction to this special issue reconsiders anthropological methods in the lingering shadows of the COVID‐19 pandemic. Bringing together ethnographically grounded contributions across Australia, Bangladesh, Germany, India, Indonesia, Fiji, Myanmar, Pakistan and Western Sahara, it examines how methods are unsettled and reworked in ...
Malini Sur   +2 more
wiley   +1 more source

Real scalar dark matter: relativistic treatment

open access: yesJournal of High Energy Physics, 2019
A stable real scalar provides one of the simplest possibilities to account for dark matter. We consider the regime where its coupling to the Standard Model fields is negligibly small.
Giorgio Arcadi   +3 more
doaj   +1 more source

Maximal axion misalignment from a minimal model

open access: yesJournal of High Energy Physics, 2020
The QCD axion is one of the best motivated dark matter candidates. The misalignment mechanism is well known to produce an abundance of the QCD axion consistent with dark matter for an axion decay constant of order 1012 GeV.
Junwu Huang   +3 more
doaj   +1 more source

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