scholarly journals Operator of Sign of Energy

2019 ◽  
Author(s):  
Christian Rakotonirina
Keyword(s):  
Dirac Theory

In this paper we have defined what we call sign operator of energy in the Dirac theory. We have shown the analogy between this operator with the helicity operator. That has lead us to a signification of the sign of the energy.

scholarly journals Moving Unstable Particles and Special Relativity

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Eugene V. Stefanovich
Keyword(s):  
Special Relativity ◽  
Reference Frame ◽  
Unstable Particle ◽  
Internal Variables ◽  
Dirac Theory ◽  
Decay Probability ◽  
Unstable Particles ◽  
Interacting Systems

In Poincaré-Wigner-Dirac theory of relativistic interactions, boosts are dynamical. This means that, just like time translations, boost transformations have a nontrivial effect on internal variables of interacting systems. In this respect, boosts are different from space translations and rotations, whose actions are always universal, trivial, and interaction-independent. Applying this theory to unstable particles viewed from a moving reference frame, we prove that the decay probability cannot be invariant with respect to boosts. Different moving observers may see different internal compositions of the same unstable particle. Unfortunately, this effect is too small to be noticeable in modern experiments.

Weyl-Dirac theory with torsion

1980 ◽  
Vol 56 (1) ◽  
pp. 21-38 ◽  
Author(s):  
D. Gregorash ◽  
G. Papini
Keyword(s):  
Dirac Theory
Sign in / Sign up

Export Citation Format

Share Document