Consistent Theories of Free Dirac Particle without Singular Predictions

Dirac’s theory is not the unique theory consistent with the physical principles specific of a free spin-one-half particle. In fact, we derive classes of theories of an elementary free particle from the principle of Poincaré’s invariance and from the principle of the covariance of the position. The t...

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Main Author: Giuseppe Nisticò
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Particles
Subjects:
Online Access:https://www.mdpi.com/2571-712X/6/1/1
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author Giuseppe Nisticò
author_facet Giuseppe Nisticò
author_sort Giuseppe Nisticò
collection DOAJ
description Dirac’s theory is not the unique theory consistent with the physical principles specific of a free spin-one-half particle. In fact, we derive classes of theories of an elementary free particle from the principle of Poincaré’s invariance and from the principle of the covariance of the position. The theory of Dirac is just one of these theories, characterized by singular predictions, namely, the zitterbewegung. Yet, the class here derived contains families of consistent theories without singular predictions. For the time being, the experimental verifiability of these alternative theories is restricted to the predictions of free-particle theories for ideal experiments.
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spelling doaj.art-4cc298b50e8a4c19920b4455d99837972023-03-28T14:28:09ZengMDPI AGParticles2571-712X2022-12-016111610.3390/particles6010001Consistent Theories of Free Dirac Particle without Singular PredictionsGiuseppe Nisticò0Dipartimento di Matematica e Informatica, Università della Calabria, Via P. Bucci, 30B, I-87036 Rende, ItalyDirac’s theory is not the unique theory consistent with the physical principles specific of a free spin-one-half particle. In fact, we derive classes of theories of an elementary free particle from the principle of Poincaré’s invariance and from the principle of the covariance of the position. The theory of Dirac is just one of these theories, characterized by singular predictions, namely, the zitterbewegung. Yet, the class here derived contains families of consistent theories without singular predictions. For the time being, the experimental verifiability of these alternative theories is restricted to the predictions of free-particle theories for ideal experiments.https://www.mdpi.com/2571-712X/6/1/1Dirac particleDirac’s theoryzitterbewegungconsistent theories without singular features
spellingShingle Giuseppe Nisticò
Consistent Theories of Free Dirac Particle without Singular Predictions
Particles
Dirac particle
Dirac’s theory
zitterbewegung
consistent theories without singular features
title Consistent Theories of Free Dirac Particle without Singular Predictions
title_full Consistent Theories of Free Dirac Particle without Singular Predictions
title_fullStr Consistent Theories of Free Dirac Particle without Singular Predictions
title_full_unstemmed Consistent Theories of Free Dirac Particle without Singular Predictions
title_short Consistent Theories of Free Dirac Particle without Singular Predictions
title_sort consistent theories of free dirac particle without singular predictions
topic Dirac particle
Dirac’s theory
zitterbewegung
consistent theories without singular features
url https://www.mdpi.com/2571-712X/6/1/1
work_keys_str_mv AT giuseppenistico consistenttheoriesoffreediracparticlewithoutsingularpredictions