scholarly journals Spin equation and its solutions

2005 ◽  
Vol 14 (11-12) ◽  
pp. 764-789 ◽  
Author(s):  
V.G. Bagrov ◽  
D.M. Gitman ◽  
M.C. Baldiotti ◽  
A.D. Levin
Keyword(s):  
Spin Equation

Pion and muon decay

1958 ◽  
Vol 246 (1247) ◽  
pp. 463-466
Keyword(s):  
Angular Distribution ◽  
Muon Spin ◽  
Muon Decay ◽  
Decay Process ◽  
Pion Decay ◽  
Decay Sequence ◽  
Spin Equation

The non-conservation of parity in pion and muon decay was discovered (Garwin, Lederman & Weinrich 1957; Friedman & Telegdi 1957) almost immediately after it had been observed in /?-decay. Experimentally it was shown that in the π - μ - e decay sequence the intensity of the final electrons had an angular distribution of the type I = A + B p μ ·p e´ where p μ (p e ) is the momentum of the muon (electron) at the point of emission. Since the muons were brought to rest between the two decay events, the connecting link could only be the muon spin. Equation (1) is thus the consequence of two separate equations, one for each decay process, pion decay σ μ = Cp μ, muon decay I = A + Dσ μ ·p e´

Lorentz-invariant spin-½ equation for the representation (1,½) ⊕ (½,0) ⊕ (0,½) ⊕ (½,1)

1979 ◽  
Vol 20 (12) ◽  
pp. 3148-3154
Author(s):  
L. P. S. Singh ◽  
Ali Dadkhah
Keyword(s):  
Spin Equation

On relativistic gasdynamics: invariance under a class of reciprocal-type transformations and integrable Heisenberg spin connections

2020 ◽  
Vol 476 (2243) ◽  
pp. 20200487
Author(s):  
C. Rogers ◽  
T. Ruggeri ◽  
W. K. Schief
Keyword(s):  
Conservation Laws ◽  
Classical Limit ◽  
Three Dimensional ◽  
Classical System ◽  
Two Dimensional ◽  
Stationary Case ◽  
Heisenberg Spin ◽  
Lift And Drag ◽  
Spin Equation

A classical system of conservation laws descriptive of relativistic gasdynamics is examined. In the two-dimensional stationary case, the system is shown to be invariant under a novel multi-parameter class of reciprocal transformations. The class of invariant transformations originally obtained by Bateman in non-relativistic gasdynamics in connection with lift and drag phenomena is retrieved as a reduction in the classical limit. In the general 3+1-dimensional case, it is demonstrated that Synge’s geometric characterization of the pressure being constant along streamlines encapsulates a three-dimensional extension of an integrable Heisenberg spin equation.

Electron spin equation in an external field involving radiative effects

1970 ◽  
Vol 31 (4) ◽  
pp. 198-199
Author(s):  
V.N. Baier ◽  
V.M. Katkov ◽  
V.M. Strakhovenko
Keyword(s):  
External Field ◽  
Electron Spin ◽  
Radiative Effects ◽  
Spin Equation
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