Results 61 to 70 of about 1,305 (201)

An étude on global vacuum energy sequester

Journal of High Energy Physics, 2017
Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative corrections.
Guido D’Amico, Nemanja Kaloper, Antonio Padilla, David Stefanyszyn, Alexander Westphal, George Zahariade   +5 more
doaj   +1 more source

Constraining Dark Energy from the Local Group Dynamics

The Astrophysical Journal Letters, 2023
This Letter develops a method to constrain the cosmological constant Λ from binary galaxies, focusing on the Milky Way and Andromeda galaxies. We provide an analytical solution to the two-body problem with Λ and show that the ratio between the Keplerian ...
David Benisty, Anne-Christine Davis, N. Wyn Evans   +2 more
doaj   +1 more source

Amidst (waste) abundance: world‐making and struggles in hosting a municipal landfill in the Bolivian lowlands Au milieu de l'abondance (de déchets) : fabrication du monde et luttes liées à la gestion d'une décharge municipale dans les basses terres de Bolivie

Journal of the Royal Anthropological Institute, EarlyView.
In recent decades, solid waste has proliferated worldwide, becoming a pressing global issue. This article explores the role of Indigenous people dwelling within and upon emerging waste scenarios, with a specific focus on involved forms of sociality and ontological contestation. Drawing on the case of a municipal landfill sited on a Guarani community in
Vanesa Martín Galán
wiley   +1 more source

On anthropic solutions of the cosmological constant problem [PDF]

Journal of High Energy Physics, 2001
Motivated by recent work of Bousso and Polchinski (BP), we study theories which explain the small value of the cosmological constant using the anthropic principle. We argue that simultaneous solution of the gauge hierarchy problem is a strong constraint on any such theory. We exhibit three classes of models which satisfy these constraints. The first is
Banks, Tom, Dine, Michael, Motl, Lubos
openaire   +2 more sources

At the Edge of Uncertainty: Decoding the Cosmological Constant Value with the Bose–Einstein Distribution

Astronomy
We propose that the observed value of the cosmological constant may be explained by a fundamental uncertainty in the spacetime metric, which arises when combining the principle that mass and energy curve spacetime with the quantum uncertainty associated ...
Ahmed Farag Ali, Nader Inan
doaj   +1 more source

GHOSTLY ENCOUNTERS IN LAGOS: Virtual Reality between Urban Marketing and Media Activism

International Journal of Urban and Regional Research, EarlyView.
Abstract This article examines the role of virtual reality (VR) technologies in mediating and contesting dominant visions of urban futures in West Africa. Drawing on theoretical insights from a hybridization of the work of the German‐born Jewish critic Walter Benjamin and the Nigerian writer Amos Tutuola, I introduce the concept of phantasmagoria as a ...
Hervé Roquet
wiley   +1 more source

Cosmological constant from a deformation of the Wheeler–DeWitt equation

Nuclear Physics B, 2016
In this paper, we consider the Wheeler–DeWitt equation modified by a deformation of the second quantized canonical commutation relations. Such modified commutation relations are induced by a Generalized Uncertainty Principle.
Remo Garattini, Mir Faizal
doaj   +1 more source

COSMOLOGICAL MARKINGS AND ERASURES: The Political Theology of State‐Led Gentrification and Heritagization

International Journal of Urban and Regional Research, EarlyView.
Abstract This article investigates the symbolic politics of state‐led gentrification and heritagization, focusing on how these processes serve to ‘glorify’ state power. Drawing on Agamben's political theology, Bourdieu's notion of symbolic power and space, and political heritage studies, we argue that the symbolic politics of state glorification can ...
Wouter van Gent, Tular Sudarmadi, Bakti Setiawan   +2 more
wiley   +1 more source

Neutron stars and the cosmological constant problem [PDF]

Physical Review D, 2011
The gravitational aether theory is a modification of general relativity that decouples vacuum energy from gravity, and thus can potentially address the cosmological constant problem. The classical theory is distinguishable from general relativity only in the presence of relativistic pressure (or vorticity).
Kamiab, Farbod, Afshordi, Niayesh
openaire   +2 more sources

Cosmic acceleration in the nonlocal approach to the cosmological constant problem

European Physical Journal C: Particles and Fields, 2018
We have recently constructed a manifestly local formulation of a nonlocal approach to the cosmological constant problem which can treat with quantum effects from both matter and gravitational fields. In this formulation, it has been explicitly shown that
Ichiro Oda
doaj   +1 more source