Results 1 to 10 of about 342,678 (191)

The path integral formulation of climate dynamics. [PDF]

open access: yesPLoS ONE, 2013
The chaotic nature of the atmospheric dynamics has stimulated the applications of methods and ideas derived from statistical dynamics. For instance, ensemble systems are used to make weather predictions recently extensive, which are designed to sample ...
Antonio Navarra   +2 more
doaj   +2 more sources

The stepwise path integral of the relativistic point particle

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
In this paper we present a stepwise construction of the path integral over relativistic orbits in Euclidean spacetime. It is shown that the apparent problems of this path integral, like the breakdown of the naive Chapman–Kolmogorov relation, can be ...
Benjamin Koch, Enrique Muñoz
doaj   +3 more sources

Path-integral formulation of pseudo-Hermitian quantum mechanics and the role of the metric operator [PDF]

open access: bronze, 2007
We provide a careful analysis of the generating functional in the path integral formulation of pseudo-Hermitian and in particular PT-symmetric quantum mechanics and show how the metric operator enters the expression for the generating functional.Comment:
Alí Mostafazadeh
openalex   +3 more sources

Superfield formulation of the phase space path integral [PDF]

open access: green, 1999
We give a superfield formulation of the path integral on an arbitrary curved phase space, with or without first class constraints. Canonical tranformations and BRST transformations enter in a unified manner.
I.A. Batalin   +5 more
openalex   +4 more sources

PATH-INTEGRAL FORMULATION OF CASIMIR EFFECTS IN SUPERSYMMETRIC QUANTUM ELECTRODYNAMICS [PDF]

open access: green, 1999
The Casimir effect is an interesting phenomenon in the sense that it provides us with one of the primitive means of extracting the energy out of the vacuum. Since the original work of Casimir a number of works have appeared in extending the result to the
Hiroyuki Abe   +3 more
openalex   +5 more sources

Path integral study of the Casimir effect in a chiral medium [PDF]

open access: yesEPJ Web of Conferences, 2022
The Casimir effect is a remarkable macroscopic feature of QED, while recent lattice studies have also shown its potential nontrivial consequences in QCD.
Oosthuyse Thomas   +4 more
doaj   +1 more source

Time-Slicing Path-integral in Curved Space [PDF]

open access: yesQuantum, 2022
Path integrals constitute powerful representations for both quantum and stochastic dynamics. Yet despite many decades of intensive studies, there is no consensus on how to formulate them for dynamics in curved space, or how to make them covariant with ...
Mingnan Ding, Xiangjun Xing
doaj   +1 more source

Lorentzian path integral for quantum tunneling and WKB approximation for wave-function

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Recently, the Lorentzian path integral formulation using the Picard–Lefschetz theory has attracted much attention in quantum cosmology. In this paper, we analyze the tunneling amplitude in quantum mechanics by using the Lorentzian Picard–Lefschetz ...
Hiroki Matsui
doaj   +1 more source

Effective Actions for Regge Piecewise Flat Quantum Gravity

open access: yesUniverse, 2022
We review the construction of the path integral and the corresponding effective action for the Regge formulation of General Relativity under the assumption that the short-distance structure of the spacetime is not a smooth 4-manifold, but a piecewise ...
Aleksandar Miković
doaj   +1 more source

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