Results 51 to 60 of about 5,717,674 (301)

Experimental Comparison of Bohm-like Theories with Different Primary Ontologies [PDF]

open access: yesQuantum, 2020
The de Broglie-Bohm theory is a hidden-variable interpretation of quantum mechanics which involves particles moving through space along deterministic trajectories. This theory singles out position as the primary ontological variable.
Arthur O. T. Pang   +7 more
doaj   +1 more source

Momentum transfer in gravitation theory

open access: yesGeneral Relativity and Gravitation, 1979
An inductive flux of gravitational momentum in Newtonian theory, and a radiative flux of gravitational momentum in general relativity, while being physically dissimilar quantities, are shown to be formally equivalent by expressing them in terms of a symplectic form on the solution space of the respective field equations.
openaire   +2 more sources

The momentum kernel of gauge and gravity theories [PDF]

open access: yesJournal of High Energy Physics, 2011
We derive an explicit formula for factorizing an $n$-point closed string amplitude into open string amplitudes. Our results are phrased in terms of a momentum kernel which in the limit of infinite string tension reduces to the corresponding field theory kernel.
Bjerrum-Bohr, N. Emil J.   +3 more
openaire   +3 more sources

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Portfolio structure and optimisation of momentum returns [PDF]

open access: yes, 2010
This study analyses momentum returns in 54 countries covering 34 years. It is the first study where optimising programmes are applied to momentum returns and portfolio selection.
Gupta, Kartick
core  

On Equivalence of Definition of the Energy-Momentum Tensor in General Relativity and Field Theory [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics
This work investigates a fundamental pedagogical question concerning the definition of the energy-momentum tensor in theoretical physics. Students learn the definition of energy-momentum tensor in the field theory and on the other hand a different ...
Sohrab Rahvar
doaj   +1 more source

Proca tubes with the flux of the longitudinal chromoelectric field and the energy flux/momentum density

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We consider non-Abelian SU(3) Proca theory with a Higgs scalar field included. Cylindrically symmetric solutions describing classical tubes either with the flux of a longitudinal electric field or with the energy flux (and hence with nonzero momentum ...
Vladimir Dzhunushaliev   +1 more
doaj   +1 more source

The Style Momentum and Its Origin [PDF]

open access: yesتحقیقات مالی, 2020
Objective: Capital market investors have always sought to identify anomalies market and plan profitable trading strategies based on them. Momentum is one the most famous anomalies market.
Maryam Davallou, Bahareh Tabarsa
doaj   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

Information Uncertainty and the Momentum Effect [PDF]

open access: yes, 2008
I identify simple proxies for uncertainty and attempt to determine if the returns to a momentum strategy vary with these proxies. The proxies identified include the stock’s daily 6-month historical return volatility, the magnitude of alpha in a 6-month ...
Cher, Liu Chang Nicholas   +1 more
core  

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