Results 81 to 90 of about 99,723 (258)

Linearization (in)stabilities and crossed products

open access: yesJournal of High Energy Physics
Modular crossed product algebras have recently assumed an important role in perturbative quantum gravity as they lead to an intrinsic regularization of entanglement entropies by introducing quantum reference frames (QRFs) in place of explicit regulators.
Julian De Vuyst   +3 more
doaj   +1 more source

Reducing the $$H_0$$ H 0 tension with exponential acoustic dark energy

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
The Hubble tension arises from different observations between the late-time and early Universe. We explore a new model with dark fluid, called the exponential acoustic dark energy (eADE) model, to relieve the Hubble tension.
Lu Yin
doaj   +1 more source

Beta-decay spectrum and Lorentz violation

open access: yesPhysics Letters B, 2022
Relativity theory and its underlying Lorentz and CPT invariance represent key principles of physics and therefore require continued experimental scrutiny across the broadest possible range of energy scales and physical systems. Possibilities for tests of
Ralf Lehnert
doaj   +1 more source

Systemic Governance From Below: Story Telling to Empower Access to the Commons Through Mapping and Modelling: A Mixed Methods Approach

open access: yesSystems Research and Behavioral Science, EarlyView.
ABSTRACT Access to forests, farming land and the Citarum river is limited in Tarumajaya; furthermore, many do not own their own housing and are dependent on the public and private landowners in the area. The region of Tarumajaya faces significant challenges in access to crucial resources such as forests, farming land and the Citarum river, leading to a
Rudolf Wirawan   +4 more
wiley   +1 more source

Transnational literacy experiences and chronotopic identity work: A duoethnography of returnee English language teachers in China

open access: yesThe Modern Language Journal, EarlyView.
Abstract This duoethnographic study explores how two nonnative returnee English teachers in China negotiate their professional identities through chronotopically layered transnational literacy experiences. Drawing on the concept of the chronotope—the interconnectedness of time, space, and personhood—the analysis identifies three chronotopic ...
Shan Chen, Luping Sun
wiley   +1 more source

Towards a theory of presence

open access: yesNoûs, EarlyView.
Abstract The present paper presents a new (formal) theory of presence according to which, roughly, to be present at a place is to have a delegate located at that place. One crucial feature of the theory is that something can be present at a place without thereby being located there.
Claudio Calosi
wiley   +1 more source

Deep Neural Networks with Spacetime RBF for Solving Forward and Inverse Problems in the Diffusion Process

open access: yesMathematics
This study introduces a deep neural network approach that utilizes radial basis functions (RBFs) to solve forward and inverse problems in the process of diffusion.
Cheng-Yu Ku   +3 more
doaj   +1 more source

Linear confinement of a scalar particle in a Gödel-type spacetime [PDF]

open access: yes, 2018
Based on the studies of confinement of quarks, we introduce a linear scalar potential into the relativistic quantum dynamics of a scalar particle. Then we analyze the linear confinement of a relativistic scalar particle in a Gödel-type spacetime in the ...
R. Vitória, C. Furtado, Knut Bakke
semanticscholar   +1 more source

Welfare and Felt Duration

open access: yesNoûs, EarlyView.
ABSTRACT How should we understand the duration of a pleasant or unpleasant sensation, insofar as its duration modulates how good or bad the experience is overall? Given that we seem able to distinguish between subjective and objective duration and that how well or badly someone's life goes is naturally thought of as something to be assessed from her ...
Andreas L. Mogensen
wiley   +1 more source

Modeling and manipulating spacetime objects in a true 4D model

open access: yesJournal of Spatial Information Science, 2017
The concept of spacetime has long been used in physics to refer to models that integrate 3D space and time as a single 4D continuum. We argue in this paper that it is also advantageous to use this concept in a practical geographic context by realizing a ...
Ken Arroyo Ohori   +2 more
doaj   +1 more source

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