- #1
Dmitry67
- 2,567
- 1
Based on the Noether theorem http://en.wikipedia.org/wiki/Noether's_theorem
there is a relationship between conseration laws and symmetries.
Conseration of energy and momentum are related to the isotropy of spacetime.
However, spacetime is NOT isotropic:
CP symmetry is violated: http://en.wikipedia.org/wiki/CP_symmetry
Based on the CPT theorem: http://en.wikipedia.org/wiki/CPT_theorem
T-symmetry is violated
Hence, our spacetime is not isotropic: there is preferred direction in time
Hence, stress energy tensor is not conserved.
Any comments?
there is a relationship between conseration laws and symmetries.
Conseration of energy and momentum are related to the isotropy of spacetime.
However, spacetime is NOT isotropic:
CP symmetry is violated: http://en.wikipedia.org/wiki/CP_symmetry
Based on the CPT theorem: http://en.wikipedia.org/wiki/CPT_theorem
T-symmetry is violated
Hence, our spacetime is not isotropic: there is preferred direction in time
Hence, stress energy tensor is not conserved.
Any comments?