Results 111 to 120 of about 3,180,602 (301)

The Cosmological Constant

open access: yesLiving Reviews in Relativity, 2001
This is a review of the physics and cosmology of the cosmological constant. Focusing on recent developments, I present a pedagogical overview of cosmology in the presence of a cosmological constant, observational constraints on its magnitude, and the ...
Carroll Sean M.
doaj  

Exposing and Challenging “Grit” in Physics Education

open access: yesScience Education, EarlyView.
ABSTRACT In STEM education, grit is increasingly the focus of research, with scholars and educators seeking to develop and test interventions that will enhance persistence. As part of the special issue Centering Affect and Emotion Toward Justice and Dignity in Science Education, in this paper, we use interviews with 12 white physics faculty to show ...
Amy Robertson   +3 more
wiley   +1 more source

Observational signatures of a non-singular bouncing cosmology [PDF]

open access: yes, 2011
We study a cosmological scenario in which inflation is preceded by a bounce. In this scenario, the primordial singularity, one of the major shortcomings of inflation, is replaced by a non-singular bounce, prior to which the universe undergoes a phase of ...
M. Lilley, L. Lorenz, S. Clesse
semanticscholar   +1 more source

Cosmological Models and Observation

open access: yes, 2005
In this work we give a detailed discussion of the basic theory and current observational status of cosmology. We introduce gauge-invariant perturbation theory to derive the linear perturbation equations and use a matrix formalism to find suitable initial conditions for numerical integration.
openaire   +2 more sources

Storying Performance: Disrupting Disciplinary Narratives in Drama, Theatre, and Performance Histories

open access: yesNew Directions for Teaching and Learning, EarlyView.
ABSTRACT This chapter simultaneously tells a story and examines the process of storytelling as it shares ideas about the decolonization of drama, theatre, and performance provoked by participating in a Disrupting interview process that included an individual interview and a land‐based medicine walk.
Kelsey Jacobson
wiley   +1 more source

The Frontiers of Observational Cosmology and the Confrontation with Theory

open access: yes, 2011
The current state of observational cosmology and the confrontation with theory is presented. The review is divided into the following sections: Basic observations on which the models are based.
M. Longair
semanticscholar   +1 more source

Gravitational baryogenesis in DGP brane cosmology

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We consider the imbalance of matter and antimatter by using a gravitational baryogenesis mechanism in the background of Dvali–Gabadadze–Porrati (DGP) brane cosmology.
K. Atazadeh
doaj   +1 more source

Cosmological Observations in a Local Void

open access: yesThe Astrophysical Journal, 1995
22 pages, 10 figures, LaTeX [aaspp,subeqn]{article}, UTPT-94 ...
John W. Moffat, D.C. Tatarski
openaire   +3 more sources

Mythogeographies of anthropological knowledge: writing over the lines and footsteps of history in Southwest China

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
In this article, I delve into the field diary of Ma Changshou – a major Chinese ethnohistorian and social anthropologist active between the 1930s and 1960s – to show how his journeys through Liangshan, a mountainous land in Southwest China inhabited by the Nuosu‐Yi, led to a new kind of anthropological knowledge.
Jan Karlach
wiley   +1 more source

Challenges to Inflation in the Post-Planck Era

open access: yesThe Astrophysical Journal
Space-based missions studying the cosmic microwave background (CMB) have progressively refined the parameter space in conventional models of inflation shortly (∼10 ^−37 s) after the Big Bang.
Jingwei Liu, Fulvio Melia
doaj   +1 more source

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