Results 81 to 90 of about 202,532 (277)

Holographic self-tuning of the cosmological constant

open access: yesJournal of High Energy Physics, 2017
We propose a brane-world setup based on gauge/gravity duality in which the four-dimensional cosmological constant is set to zero by a dynamical self-adjustment mechanism. The bulk contains Einstein gravity and a scalar field. We study holographic RG flow
Christos Charmousis   +2 more
doaj   +1 more source

Cosmological Model with Ω M -Dependent Cosmological Constant [PDF]

open access: yesGeneral Relativity and Gravitation, 2003
The idea here is to set the cosmical constant $ $ proportional to the scalar of the stress-energy tensor of the ordinary matter. We investigate the evolution of the scale factor in a cosmological model in which the cosmological constant is proportional to the scalar of the stress-energy tensor.
openaire   +3 more sources

Post‐Traumatic Growth in the Global South: Possibilities in Relational Ethics from Communities to Classrooms

open access: yesTESOL Quarterly, EarlyView.
Abstract This article reports on a qualitative study of the way instructors and students understand and respond to traumatizing events in a Sri Lankan university. It shows how the attitudes and practices in the society at large are carried over to classrooms even though local institutions do not have a programmatic trauma‐informed pedagogy.
Suresh Canagarajah   +1 more
wiley   +1 more source

Varying Constants, Gravitation and Cosmology [PDF]

open access: yesLiving Reviews in Relativity, 2011
Abstract Fundamental constants are a cornerstone of our physical laws. Any constant varying in space and/or time would reflect the existence of an almost massless field that couples to matter. This will induce a violation of the universality of free fall.
openaire   +5 more sources

Cosmological constant, fine structure constant and beyond [PDF]

open access: yesThe European Physical Journal C, 2017
In the present work, we consider the cosmological constant model $ \propto ^{-6}$, which is well motivated from three independent approaches. As is well known, the hint of varying fine structure constant $ $ was found in 1998. If $ \propto ^{-6}$ is right, it means that the cosmological constant $ $ should also be varying. Here, we try to develop
Wei, Hao   +3 more
openaire   +2 more sources

Linearized stability analysis of thin-shell wormholes with a cosmological constant

open access: yes, 2003
Spherically symmetric thin-shell wormholes in the presence of a cosmological constant are constructed applying the cut-and-paste technique implemented by Visser.
Anchordoqui L   +19 more
core   +1 more source

For an inviting anthropology Pour une anthropologie accueillante

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
Anthropologists have recently become inspired, captivated even, by the practices of the arts, design, and architecture in efforts to renew anthropology's modes of engagement and understandings of its relevance, particularly affecting how we approach ethnographic fieldwork.
Tomás Criado   +2 more
wiley   +1 more source

Gravitational deflection of light in the Schwarzschild -de Sitter space time

open access: yes, 2010
Recent studies suggest that the cosmological constant affects the gravitational bending of photons although the orbital equation for light in Schwarzschild-de Sitter space time is free from cosmological constant.
Arunava Bhadra   +4 more
core   +1 more source

Autopsy, deathways, and intercultural healthcare in the southern Peruvian Andes Autopsie, pratiques mortuaires et soins de santé interculturels dans le sud des Andes péruviennes

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
While death remains a popular topic for anthropology, relatively few ethnographic accounts consider the modern bureaucratic processes accompanying it. One such process is public health autopsy, which scholars have largely taken for granted. Existing analysis has regarded it as a form of ‘cultural brokering’ and autopsy reluctance in communities is seen,
David M.R. Orr
wiley   +1 more source

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