Results 1 to 10 of about 707,856 (145)

Superoperator Master Equations and Effective Dynamics [PDF]

open access: yesEntropy, 2023
We developed the projection method to derive an analog of the quantum master equation for propagators rather than density matrices themselves. As these propagators are superoperators, we call them superoperator master equations.
Alexander Evgen’evich Teretenkov
doaj   +2 more sources

Spectral Properties of Effective Dynamics from Conditional Expectations [PDF]

open access: yesEntropy, 2021
The reduction of high-dimensional systems to effective models on a smaller set of variables is an essential task in many areas of science. For stochastic dynamics governed by diffusion processes, a general procedure to find effective equations is the ...
Feliks Nüske   +3 more
doaj   +2 more sources

Effective dynamics of nucleosome configurations at the yeast PHO5 promoter [PDF]

open access: yeseLife, 2021
Chromatin dynamics are mediated by remodeling enzymes and play crucial roles in gene regulation, as established in a paradigmatic model, the Saccharomyces cerevisiae PHO5 promoter. However, effective nucleosome dynamics, that is, trajectories of promoter
Michael Roland Wolff   +3 more
doaj   +2 more sources

Dynamic Rashba-Dresselhaus Effect [PDF]

open access: yesPhysical Review Letters, 2021
The Rashba-Dresselhaus effect is the splitting of doubly degenerate band extrema in semiconductors, accompanied by the emergence of counter-rotating spin textures and spin-momentum locking. Here we investigate how this effect is modified by lattice vibrations.
Martin Schlipf, Feliciano Giustino
openaire   +3 more sources

Mechanistic Study on the Influence of Stratigraphy on the Initiation and Expansion Pattern of Hydraulic Fractures in Shale Reservoirs

open access: yesApplied Sciences, 2022
The unique depositional characteristics of shale reservoirs lead to the extreme development of shale laminae, natural fractures, and other weak surfaces, which have an important influence on the hydraulic fracture extension behavior and the final ...
Shuangming Li, Zhiwen Hu, Xin Chang
doaj   +1 more source

Projective subdynamics and universal shifts [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
We study the projective subdynamics of two-dimensional shifts of finite type, which is the set of one-dimensional configurations that appear as columns in them.
Pierre Guillon
doaj   +1 more source

Experimental Study on the Hydraulic Fracture Propagation in Inter-Salt Shale Oil Reservoirs

open access: yesEnergies, 2022
In response to the difficulty of fracture modification in inter-salt shale reservoirs and the unknown pattern of hydraulic fracture expansion, corresponding physical model experiments were conducted to systematically study the effects of fracturing fluid
Yunqi Shen   +3 more
doaj   +1 more source

Dynamic treatment effects [PDF]

open access: yesJournal of Econometrics, 2016
This paper develops robust models for estimating and interpreting treatment effects arising from both ordered and unordered multistage decision problems. Identification is secured through instrumental variables and/or conditional independence (matching) assumptions.
Heckman, James J.   +2 more
openaire   +3 more sources

Dynamical Franz-Keldysh Effect [PDF]

open access: yesPhysical Review Letters, 1996
We introduce and analyze the properties of dynamical Franz-Keldysh effect, i.e. the change of density-of-states, or absorption spectra, of semiconductors under the influence of {\it time-dependent} electric fields. In the case of a harmonic time-dependence, we predict the occurence of significant fine structure, both below and above the zero-field band-
Jauho, Antti-Pekka, Johnsen, Kristinn
openaire   +4 more sources

Functional renormalization group for multilinear disordered Langevin dynamics II:Revisiting the p = 2 spin dynamics for Wigner and Wishart ensembles

open access: yesJournal of Physics Communications, 2023
In this paper, we investigate the large-time behavior for a slightly modified version of the standard p = 2 soft spins dynamics model, including a quartic or higher potential. The equilibrium states of such a model correspond to an effective field theory,
Vincent Lahoche   +2 more
doaj   +1 more source

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