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Path probability selection in nature and path integral [PDF]

open access: yesScientific Reports, 2022
Understanding of any biological evolutions, such as speciation, adaptation behavior and biodiversity pattern, is based on a fundamental concept of fitness, in which natural selection implies the improvement and progress of fitness in either direct ...
Chao Wang, Min-Lan Li, Rui-Wu Wang
doaj   +2 more sources

Continuous-Discrete Path Integral Filtering

open access: yesEntropy, 2008
A summary of the relationship between the Langevin equation, Fokker-Planck-Kolmogorov forward equation (FPKfe) and the Feynman path integral descriptions of stochastic processes relevant for the solution of the continuous-discrete filtering problem is ...
Archambeau   +14 more
core   +5 more sources

Path Integral Molecular Dynamics of Liquid Water in a Mean‐Field Particle Reservoir [PDF]

open access: yesChemistryOpen, 2022
We present a simulation scheme for path integral simulation of molecular liquids where a small open region is embedded in a large reservoir of non interacting point‐particles.
Antonios Evangelakis   +2 more
doaj   +2 more sources

Normalized Gaussian path integrals [PDF]

open access: yesPhysical Review E, 2020
Path integrals play a crucial role in describing the dynamics of physical systems subject to classical or quantum noise. In fact, when correctly normalized, they express the probability of transition between two states of the system. In this work, we show a consistent approach to solve conditional and unconditional Euclidean (Wiener) Gaussian path ...
Giulio Corazza, Matteo Fadel
openaire   +4 more sources

Koopman Operator and Path Integral of Quantum Free-Electron Laser Model

open access: yesMathematics, 2022
A quantum model of a free-electron laser (FEL) is considered. Two different approaches for the exploration of the the FEL system are considered. In the first case, the Heisenberg equations of motion are mapped on the basis of the initial wave functions ...
Alexander Iomin
doaj   +1 more source

Holographic path-integral optimization

open access: yesJournal of High Energy Physics, 2021
In this work we elaborate on holographic description of the path-integral optimization in conformal field theories (CFT) using Hartle-Hawking wave functions in Anti-de Sitter spacetimes.
Jan Boruch   +3 more
doaj   +1 more source

Path integral in quantum field theories

open access: yesVojnotehnički Glasnik, 2022
Introduction/purpose: Starting from the Hamiltonian an alternative description of quantum mechanics has been given, based on the sum of all possible paths between an initial and a final point.
Nicola Fabiano
doaj   +1 more source

Path-integral evidence [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
Here we present a Bayesian formalism for the goodness-of-fit that is the evidence for a fixed functional form over the evidence for all functions that are a general perturbation about this form. This is done under the assumption that the statistical properties of the data can be modelled by a multivariate Gaussian distribution.
Kitching, T. D., Taylor, A. N.
openaire   +2 more sources

Unifying Theory for Casimir Forces: Bulk and Surface Formulations

open access: yesUniverse, 2021
The principles of the electromagnetic fluctuation-induced phenomena such as Casimir forces are well understood. However, recent experimental advances require universal and efficient methods to compute these forces.
Giuseppe Bimonte, Thorsten Emig
doaj   +1 more source

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