Results 1 to 10 of about 331,106 (326)

New Asymptotic Expanstion Method for the Wheeler-DeWitt Equation [PDF]

open access: green, 1995
A new asymptotic expansion method is developed to separate the Wheeler-DeWitt equation into the time-dependent Schr\"{o}dinger equation for a matter field and the Einstein-Hamilton-Jacobi equation for the gravitational field including the quantum back ...
C. Gundlach   +30 more
core   +2 more sources

Cosmic branes and asymptotic structure

open access: yesJournal of High Energy Physics, 2019
Superrotations of asymptotically flat spacetimes in four dimensions can be interpreted in terms of including cosmic strings within the phase space of allowed solutions.
F. Capone, M. Taylor
doaj   +3 more sources

Asymptotic Expansion and Weak Approximation for a Stochastic Control Problem on Path Space [PDF]

open access: yesEntropy
The paper provides a precise error estimate for an asymptotic expansion of a certain stochastic control problem related to relative entropy minimization. In particular, it is shown that the expansion error depends on the regularity of functionals on path
Masaya Kannari   +2 more
doaj   +2 more sources

Asymptotic expansions through the loop-tree duality

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Asymptotic expansions of Feynman amplitudes in the loop-tree duality formalism are implemented at integrand-level in the Euclidean space of the loop three-momentum, where the hierarchies among internal and external scales are well-defined.
Judith Plenter, Germán Rodrigo
doaj   +1 more source

On asymptotic dark energy in string theory

open access: yesJournal of High Energy Physics, 2023
We examine bounds on accelerated expansion in asymptotic regions of the moduli space in string theory compactifications to four spacetime dimensions. While there are conjectures that forbid or constrain accelerated expansion in such asymptotic regions ...
Sera Cremonini   +4 more
doaj   +1 more source

Minimizing sequences for a linear-quadratic control problem with three-tempo variables under weak nonlinear perturbations [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2023
The paper deals with the construction of minimizing sequences for the problem of minimizing a weakly nonlinearly perturbed quadratic performance index on trajectories of a weakly nonlinear system with threetempo state variables. For this purpose,
G.A. Kurina, M.A. Kalashnikova
doaj   +3 more sources

H. Bergstrom’s asymptotic expansions

open access: yesLietuvos Matematikos Rinkinys, 2020
In this work it is researched H. Bergstrom work about asymptotic behavior of convolutions of probability distributions. We give the theorem about the members of expansion in decreasing order and the remainder term estimation.
Algimantas Bikelis, Audrius Galinskis
doaj   +1 more source

Approximate Transmission Conditions for a Poisson Problem at Mid-Diffusion

open access: yesMathematical Modelling and Analysis, 2015
This work consists in the asymptotic analysis of the solution of Poisson equation in a bounded domain of RP(P = 2, 3) with a thin layer. We use a method based on hierarchical variational equations to derive an explicitly asymptotic expansion of the ...
Khaled El-Ghaouti Boutarene
doaj   +1 more source

Asymptotic theory for thin two-ply shells

open access: yesVietnam Journal of Mechanics, 2020
We develop an asymptotic model for the finite-deformation, small-strain response of thin laminated shells composed of two perfectly bonded laminae that exhibit reflection symmetry of the material properties with respect to an interfacial surface.
David J. Steigmann
doaj   +1 more source

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