Newton-Wigner position operator and the corresponding spin operator in relativistic quantum mechanics

Autor:	Taeseung Choi
Rok vydání:	2015
Předmět:	Physics Momentum operator symbols.namesake Ladder operator Quantum mechanics Position operator symbols General Physics and Astronomy Displacement operator Angular momentum operator Shift operator Hamiltonian (quantum mechanics) Dirac operator
Zdroj:	Journal of the Korean Physical Society. 66:877-881
ISSN:	1976-8524 0374-4884
DOI:	10.3938/jkps.66.877
Popis:	A relativistic spin operator is the difference between the total and the orbital angular momentum. As the unique position operator for a localized state, the remarkable Newton-Wigner position operator, which has all the desirable commutation relations of a position operator, can give a proper spin operator. Historically, the three important spin operators proposed by Bogolubov et al., Pryce, and Foldy-Woutheysen, respectively were investigated to manifest a spin operator corresponding to the Newton-Wigner position operator. We clarify a unique spin operator in relativistic quantum mechanics, which can be described by using the Dirac Hamiltonian.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::845ba20c469cdfaa8324d1df5333f7c7 https://doi.org/10.3938/jkps.66.877 Zobrazit plný text záznamu Full text from SpringerLink