Results 71 to 80 of about 385,645 (329)

State‐Level Politics in Forest Governance: The Role of the Narrative‐Policy Nexus in the Brazilian Amazon

open access: yesEnvironmental Policy and Governance, EarlyView.
ABSTRACT Deforestation and its social impacts are an enduring challenge in agrarian frontiers, especially in the tropics. Fueled by global demand for commodities, this process is mediated by ideas, concepts, meanings, and policies that uphold socioenvironmental degradation. A key and understudied—arena in which this mediation occurs is the sub‐national
Gabriela Russo Lopes, Fabio de Castro
wiley   +1 more source

Gravitational production of completely dark photons with nonminimal couplings to gravity

open access: yesJournal of High Energy Physics
Dark photons are a theorized massive spin-1 particle which can be produced via various mechanisms, including cosmological gravitational particle production (GPP) in the early universe.
Christian Capanelli   +3 more
doaj   +1 more source

Primordial black holes in Gauss-Bonnet gravity

open access: yesPhysics Letters B
In this paper, we investigate the production of primordial black holes (PBHs) during the preheating era. Indeed, the amplification of field fluctuations can lead to the amplification of curvature perturbations.
Brahim Asfour   +4 more
doaj   +1 more source

Graviton fluctuations erase the cosmological constant

open access: yesPhysics Letters B, 2017
Graviton fluctuations induce strong non-perturbative infrared renormalization effects for the cosmological constant. The functional renormalization flow drives a positive cosmological constant towards zero, solving the cosmological constant problem ...
C. Wetterich
doaj   +1 more source

On Dynamics of Brans--Dicke Theory of Gravitation

open access: yes, 2010
We study longstanding problem of cosmological clock in the context of Brans-Dicke theory of gravitation. We present the Hamiltonian formulation of the theory for a class of spatially homogenous cosmological models.
Farajollahi, Hossein   +2 more
core   +1 more source

Cheia de axé (full of axé): Spirituality, resistance, and repair in Pernambuco's Afro‐Brazilian traditional communities

open access: yesFeminist Anthropology, EarlyView.
Abstract This article explores how Afro‐Brazilian communities in Pernambuco respond to state‐led industrial development through culturally rooted practices of resistance and repair. Drawing on archival and ethnographic research in the coastal municipalities of Cabo de Santo Agostinho and Ipojuca, this study traces the effects of Brazil's large‐scale ...
Shelly Annette Biesel
wiley   +1 more source

Cosmological implications of Kalb-Ramond-like particles

open access: yesJournal of High Energy Physics
The Kalb-Ramond field is an antisymmetric, rank-two tensor field which most notably appears in the context of string theory, but has largely been unexplored in the context of cosmology.
Christian Capanelli   +3 more
doaj   +1 more source

Kosmologi Ibnu Arabi dan Covid-19: Relasi dan Solusi Alternatif dalam Tasawuf Filosofi

open access: yesEsoterik: Jurnal Akhlak dan Tasawuf, 2021
This paper aims to discuss Ibn Arabi's cosmological thinking in relation to the Covid-19 phenomenon. According to Ibn Arabi, the cosmological phenomenon is a reality that does not appear by itself but comes from God.
Muhammad Firdaus Imaduddin   +2 more
doaj   +1 more source

Cosmological singularity

open access: yes, 2009
The talk at international conference in honor of Ya. B. Zeldovich 95th Anniversary, Minsk, Belarus, April 2009. The talk represents a review of the old results and contemporary development on the problem of cosmological singularity.Comment: to appear in ...
Belinski, V.
core   +1 more source

Posidonius' Cosmology

open access: yesPerspectiva Filosófica, 2020
Posidonius incorporated important concepts of Peripatetic physics into his system. Posidonius adopted a finitist cosmological model where the extra- cosmic void was not infinite but just as large as the cosmos’ size at the time of the conflagration (F 84/97a E ̶ K).
openaire   +3 more sources

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