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The Fluid Dynamics of Spin - a Fisher Information Perspective

Asher Yahalom A

Published Feb 3, 2018• 5 citations
OpenAlex

Abstract

Two state systems have wide applicability in quantum modelling of various systems. Here I return to the original two state system, that is Pauli's electron with a spin. And show how this system can be interpreted as a vortical fluid. The similarities and difference between spin flows and classical ideal flows are elucidated. It will be shown how the internal energy of the spin fluid can partially be interpreted in terms of Fisher Information.

Related papers

Fisher Information Perspective of Pauli's Electron

Asher Yahalom A

A non relativistic electron with a spin is described by Pauli's equation. It has been shown that this system can be interpreted as a vortical fluid which has both similarities and differences with classical ideal flows. Moreover, it was demonstrated that the internal energy of the spin fluid can partially be interpreted in terms of Fisher Information. While previous work on the subject has mainly ignored electromagnetic fields which are represented by a vector potential here we remove this limitation and study the system under general electromagnetic interaction.

arXiv:1802.09331•Feb 3, 2018•0 citations

The fluid dynamics of spin

Asher Yahalom A

Michael Baer is known for his many achievements in the field of non-adiabatic quantum dynamics and the theory of reaction dynamics. Among his main tools of inquiry is the study of two-state quantum systems. I was fortunate enough to collaborate with him on such models in the first part of the previous decade and the last years of the previous century. Here, I return to the original two-state system, that is Pauli's electron with a spin and show how this system can be interpreted as a vortical fluid. The similarities and difference between spin flows and classical ideal flows are elucidated.

Molecular Physics•Apr 13, 2018•16 citations

Fisher Information Perspective of Pauli’s Electron

Asher Yahalom A

An electron moving at velocities much lower that the speed of light with a spin, is described by a wave function which is a solution of Pauli's equation. It has been demonstrated that this system can be viewed as a vortical fluid which has remarkable similarities but also differences with classical ideal flows. In this respect, it was shown that the internal energy of the Pauli fluid can be interpreted, to some degree, as Fisher Information. In previous work on this subject, electromagnetic fields which are represented by a vector potential were ignored, here we remove this limitation and study the system under general electromagnetic interaction.

Entropy•Nov 24, 2022•11 citations

Dirac Theory, Relativistic Fluid Dynamics & Fisher Information

Asher Yahalom A

Abstract In previous papers we have shown how Schrödinger equations which include an electromagnetic field interaction can be deduced from a fluid dynamical Lagrangian of a charged potential flow that interacts with an electromagnetic field. The quantum behaviour was derived from Fisher information terms which were added to the classical Lagrangian. It was thus shown that a quantum mechanical system is drived by information and not only electromagnetic fields. This program was applied also to Pauli’s equations by removing the restriction of potential flow and using the Clebsch formalism. Although the analysis was quite successful there were still terms that did not admit interpretation, some of them can be easily traced to the relativistic Dirac theory. It is thus suggested to repeat the analysis for a relativistic flow, relating it to the Dirac theory by adding invariant four dimensional Fisher information terms. It is shown that while the classical parts of a classical fluid and a Dirac fluid can be mapped, the Fisher information term of Dirac theory is non-trivial. L Quantum = L Classical Fluid + L Fisher Information

Journal of Physics Conference Series•Dec 1, 2024•1 citation

A Fluid Perspective of Relativistic Quantum Mechanics

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In previous papers, it has been shown how Schrödinger's equation which includes an electromagnetic field interaction can be deduced from a fluid dynamical Lagrangian of a charged potential flow that interacts with an electromagnetic field. The quantum behaviour is derived from Fisher information terms added to the classical Lagrangian, showing that a quantum mechanical system is driven by information and not only electromagnetic fields. This program was applied to Pauli's equations by removing the restriction of potential flow and using the Clebsch formalism. Although the analysis was quite successful, there were terms that did not admit interpretation, a number of which can be easily traced to the relativistic Dirac theory. Here, this analysis is repeated for a relativistic flow, pointing to a new approach for deriving relativistic quantum mechanics.

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Dirac Equation and Fisher Information

Asher Yahalom A

Previously, it was shown that Schrödinger's theory can be derived from a potential flow Lagrangian provided a Fisher information term is added. This approach was later expanded to Pauli's theory of an electron with spin, which required a Clebsch flow Lagrangian with non-zero vorticity. Here, we use the recent relativistic flow Lagrangian to represent Dirac's theory with the addition of a Lorentz invariant Fisher information term as is required by quantum mechanics.

Entropy•Nov 12, 2024•1 citation
Two state systems have wide applicability in quantum modelling of various systems. Here I return to the original two state system, that is Pauli's electron with a spin. And show how this system can be interpreted as a vortical fluid. The similarities and difference between spin flows and classical ideal flows are elucidated. It will be shown how the internal energy of the spin fluid can partially be interpreted in terms of Fisher Information.
A non relativistic electron with a spin is described by Pauli's equation. It has been shown that this system can be interpreted as a vortical fluid which has both similarities and differences with classical ideal flows. Moreover, it was demonstrated that the internal energy of the spin fluid can partially be interpreted in terms of Fisher Information. While previous work on the subject has mainly ignored electromagnetic fields which are represented by a vector potential here we remove this limitation and study the system under general electromagnetic interaction.
Michael Baer is known for his many achievements in the field of non-adiabatic quantum dynamics and the theory of reaction dynamics. Among his main tools of inquiry is the study of two-state quantum systems. I was fortunate enough to collaborate with him on such models in the first part of the previous decade and the last years of the previous century. Here, I return to the original two-state system, that is Pauli's electron with a spin and show how this system can be interpreted as a vortical fluid. The similarities and difference between spin flows and classical ideal flows are elucidated.
An electron moving at velocities much lower that the speed of light with a spin, is described by a wave function which is a solution of Pauli's equation. It has been demonstrated that this system can be viewed as a vortical fluid which has remarkable similarities but also differences with classical ideal flows. In this respect, it was shown that the internal energy of the Pauli fluid can be interpreted, to some degree, as Fisher Information. In previous work on this subject, electromagnetic fields which are represented by a vector potential were ignored, here we remove this limitation and study the system under general electromagnetic interaction.
Abstract In previous papers we have shown how Schrödinger equations which include an electromagnetic field interaction can be deduced from a fluid dynamical Lagrangian of a charged potential flow that interacts with an electromagnetic field. The quantum behaviour was derived from Fisher information terms which were added to the classical Lagrangian. It was thus shown that a quantum mechanical system is drived by information and not only electromagnetic fields. This program was applied also to Pauli’s equations by removing the restriction of potential flow and using the Clebsch formalism. Although the analysis was quite successful there were still terms that did not admit interpretation, some of them can be easily traced to the relativistic Dirac theory. It is thus suggested to repeat the analysis for a relativistic flow, relating it to the Dirac theory by adding invariant four dimensional Fisher information terms. It is shown that while the classical parts of a classical fluid and a Dirac fluid can be mapped, the Fisher information term of Dirac theory is non-trivial. L Quantum = L Classical Fluid + L Fisher Information
In previous papers, it has been shown how Schrödinger's equation which includes an electromagnetic field interaction can be deduced from a fluid dynamical Lagrangian of a charged potential flow that interacts with an electromagnetic field. The quantum behaviour is derived from Fisher information terms added to the classical Lagrangian, showing that a quantum mechanical system is driven by information and not only electromagnetic fields. This program was applied to Pauli's equations by removing the restriction of potential flow and using the Clebsch formalism. Although the analysis was quite successful, there were terms that did not admit interpretation, a number of which can be easily traced to the relativistic Dirac theory. Here, this analysis is repeated for a relativistic flow, pointing to a new approach for deriving relativistic quantum mechanics.