Results 101 to 110 of about 912,180 (214)

Gravitational formulation of stress-tensor deformed field theories

open access: yesJournal of High Energy Physics
Stress-tensor deformations suggest a geometric origin of emergent gravity but are typically non-local for d > 2. We couple a seed QFT to Einstein gravity with deformation parameter λ and evaluate the gravitational path integral at the metric saddle ...
Yunfei Xie, Yun-Ze Li, Lixin Xu, Song He
doaj   +1 more source

Management intensity and habitat structure jointly shape moth communities in perennial agroecosystems

open access: yesInsect Conservation and Diversity, EarlyView.
Extensive orchards supported the highest species richness. Community composition varied considerably among management types, with the most pronounced contrast between extensive and integrated sites. Differences in moth communities among orchard management types are driven mainly by species turnover, with organic orchards showing overlapping assemblages
David Caha   +4 more
wiley   +1 more source

How Brokers Enable Collective Identity Formation in Fragmented Industry Groups: The Case of Franciacorta Wineries

open access: yesJournal of Management Studies, EarlyView.
Abstract This study illuminates the role of brokers, that is, actors spanning inter‐organizational boundaries, in the process of collective identity formation in fragmented industry groups. Through an in‐depth longitudinal analysis of the Franciacorta wineries from the 1960s to the 1990s, we uncover how technical consultants acting as brokers ...
Alessandra Zamparini   +2 more
wiley   +1 more source

Towards gauge independence in asymptotically safe quantum gravity

open access: yesJournal of High Energy Physics
We study gauge dependence in proper-time renormalisation group flows for asymptotically safe quantum gravity. Working in an essential scheme, we use field redefinitions to separate redundant off-shell contributions from the on-shell running of physical ...
Kevin Falls   +2 more
doaj   +1 more source

Dark energy and dark matter configurations for wormholes and solitionic hierarchies of nonmetric Ricci flows and $$F(R,T,Q,T_{m})$$ F ( R , T , Q , T m ) gravity

open access: yesEuropean Physical Journal C: Particles and Fields
We extend the anholonomic frame and connection deformation method, AFCDM, for constructing exact and parametric solutions in general relativity, GR, to geometric flow models and modified gravity theories, MGTs, with nontrivial torsion and nonmetricity ...
Laurenţiu Bubuianu   +3 more
doaj   +1 more source

Lipidomics of orchid seeds: from development to storage

open access: yesPlant Biology, EarlyView.
The study tracked lipid changes from pollination to storage in two orchid species. Although both were desiccation‐tolerant and storable, differences in saturated and unsaturated fatty acid proportions during development led to different moisture contents and germination capacities.
C. C. Custódio   +5 more
wiley   +1 more source

Curvature estimates for the Ricci flow I [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2007
In this paper we present several curvature estimates and convergence results for solutions of the Ricci flow. The curvature estimates depend on smallness of certain local space-time integrals of the norm of the Riemann curvature tensor, while the convergence results require finiteness of space-time integrals of the norm of the Riemann curvature tensor.
openaire   +5 more sources

The anholonomic frame and connection deformation method for constructing off-diagonal solutions in (modified) Einstein gravity and nonassociative geometric flows and Finsler–Lagrange–Hamilton theories

open access: yesEuropean Physical Journal C: Particles and Fields
This article is a status report on the anholonomic frame and connection deformation method, AFCDM, for constructing generic off-diagonal exact and parametric solutions in general relativity, GR, relativistic geometric flows and modified gravity theories,
Laurenţiu Bubuianu   +5 more
doaj   +1 more source

A Complexity‐Based Approach to Migration Policy Change: The Case of the German Residence Act

open access: yesRegulation &Governance, EarlyView.
ABSTRACT This paper adapts and applies existing indicators to measure the complexity of German migration policy over time. Building on recent scholarship that conceptualizes migration policy as multidimensional, I adapt a measurement strategy from the EUPLEX Project to capture three key components of regulatory complexity: structural, linguistic, and ...
Pau Palop‐García
wiley   +1 more source

An introduction to conformal Ricci flow [PDF]

open access: yesClassical and Quantum Gravity, 2004
52 pages, 1 ...
openaire   +3 more sources

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