Abstract
We propose Lagrangian formulation for the particle with value of spin fixed within the classical theory. The Lagrangian is invariant under non-Abelian group of local symmetries. On this reason, all the initial spin variables turn out to be unobservable quantities. As the gauge-invariant variables for description of spin we can take either the Frenkel tensor or the Bargmann-Michel-Telegdi (BMT) vector. Fixation of spin within the classical theory implies O(h)-corrections to the corresponding equations of motion.
| Original language | English |
|---|---|
| Article number | 1250234 |
| Journal | Modern Physics Letters A |
| Volume | 28 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 10 Jan 2013 |
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Keywords
- Bargmann-Michel-Telegdi equation
- Frenkel equation
- Semiclassical description of relativistic spin
- Theories with constraints
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Astronomy and Astrophysics
Cite this
Variational problem for the frenkel and the Bargmann-Michel-Telegdi (BMT) equations. / Deriglazov, A. A.
In: Modern Physics Letters A, Vol. 28, No. 1, 1250234, 10.01.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Variational problem for the frenkel and the Bargmann-Michel-Telegdi (BMT) equations
AU - Deriglazov, A. A.
PY - 2013/1/10
Y1 - 2013/1/10
N2 - We propose Lagrangian formulation for the particle with value of spin fixed within the classical theory. The Lagrangian is invariant under non-Abelian group of local symmetries. On this reason, all the initial spin variables turn out to be unobservable quantities. As the gauge-invariant variables for description of spin we can take either the Frenkel tensor or the Bargmann-Michel-Telegdi (BMT) vector. Fixation of spin within the classical theory implies O(h)-corrections to the corresponding equations of motion.
AB - We propose Lagrangian formulation for the particle with value of spin fixed within the classical theory. The Lagrangian is invariant under non-Abelian group of local symmetries. On this reason, all the initial spin variables turn out to be unobservable quantities. As the gauge-invariant variables for description of spin we can take either the Frenkel tensor or the Bargmann-Michel-Telegdi (BMT) vector. Fixation of spin within the classical theory implies O(h)-corrections to the corresponding equations of motion.
KW - Bargmann-Michel-Telegdi equation
KW - Frenkel equation
KW - Semiclassical description of relativistic spin
KW - Theories with constraints
UR - http://www.scopus.com/inward/record.url?scp=84872390718&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84872390718&partnerID=8YFLogxK
U2 - 10.1142/S0217732312502343
DO - 10.1142/S0217732312502343
M3 - Article
VL - 28
JO - Modern Physics Letters A
JF - Modern Physics Letters A
SN - 0217-7323
IS - 1
M1 - 1250234
ER -