It's conserved because we require that the Hamiltonian not be explicitly
time dependent (we want our laws to apply equally at all times); that
and Noether's theorem imply conservation of 4-momentum.
Brent Meeker
Michael Rosefield wrote:
> To pull a fatuous idea from where the sun doth not shine, what if
> energy is merely moving 'between universes'; it is conserved just
> because of statistical balance.
>
> On 17/04/2008, *Brent Meeker* <meekerdb.domain.name.hidden
> <mailto:meekerdb.domain.name.hidden>> wrote:
>
>
> I'm not sure what source of photon creation you have in mind, but QFT
> doesn't allow violation of energy conservation.
>
>
> --
> "They couldn't hit an elephant at this dist-"
> Last words of Gen. John Sedgwick, spoken as he looked out over the
> parapet at enemy lines during the Battle of Spotsylvania in 1864.
> >
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Received on Thu Apr 17 2008 - 19:51:09 PDT