Results 21 to 30 of about 89,565 (306)

Path integral representation of the Dirac equation and integration order

open access: yes, 2022
In this paper we ask if there is an interesting twist in mathematics of the Feynman propagator of the present day [1] formalism for the Dirac equation. The case studied is with only a potential function V .
Han, Geurdes
core   +1 more source

Computational convergence of the path integral for real dendritic morphologies [PDF]

open access: yes, 2012
Neurons are characterised by a morphological structure unique amongst biological cells, the core of which is the dendritic tree. The vast number of dendritic geometries, combined with heterogeneous properties of the cell membrane, continue to challenge ...
Donnelly, Simon R.   +7 more
core   +1 more source

Path integrals and parastatistics [PDF]

open access: yesNuclear Physics B, 1996
14 pages, no figures, phyzzx ...
openaire   +2 more sources

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

Path Integral Action for a Resonant Detector of Gravitational Waves in the Generalized Uncertainty Principle Framework

open access: yesUniverse, 2022
The Heisenberg uncertainty principle is modified by the introduction of an observer-independent minimal length. In this work, we have considered the resonant gravitational wave detector in the modified uncertainty principle framework, where we have used ...
Soham Sen   +2 more
doaj   +1 more source

The functional integral formulation of the Schrieffer–Wolff transformation

open access: yesNew Journal of Physics, 2016
We revisit the Schrieffer–Wolff transformation and present a path integral version of this important canonical transformation. The equivalence between the low-energy sector of the Anderson model in the so-called local moment regime and the spin-isotropic
Farzaneh Zamani   +2 more
doaj   +1 more source

Nonlocal transformation of the internal quantum particle structure

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2016
The analysis of the integral wave equation, having path integral kernel, has resulted, that collapse phenomenon is based on the nonlocal transformation of the internal structure of a quantum particle, considering in the form of the matter fields ...
Alexey Yu Samarin
doaj   +1 more source

Harmonic Path Integral Diffusion

open access: yesIEEE Access
Harmonic Path Integral Diffusion (H-PID) introduces a novel approach to sampling from complex, continuous probability distributions by creating a time-dependent “bridge” from an initial point to the target distribution.
Hamidreza Behjoo, Michael Chertkov
doaj   +1 more source

Principles of Insect Path Integration [PDF]

open access: yesCurrent Biology, 2018
Continuously monitoring its position in space relative to a goal is one of the most essential tasks for an animal that moves through its environment. Species as diverse as rats, bees, and crabs achieve this by integrating all changes of direction with the distance covered during their foraging trips, a process called path integration.
Heinze, Stanley   +2 more
openaire   +5 more sources

Making the gravitational path integral more Lorentzian or Life beyond Liouville gravity

open access: yes, 1999
In two space-time dimensions, there is a theory of Lorentzian quantum gravity which can be defined by a rigor- ous, non-perturbative path integral and is inequivalent to the well-known theory of (Euclidean) quantum Liouville gravity. It has a number of
Ambjørn, J.   +11 more
core   +1 more source

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