Re: Query about non-symmetric energy tensors
- From: DRLunsford <antimatter33@xxxxxxxxx>
- Date: Tue, 25 Mar 2008 11:02:40 +0000 (UTC)
On Mar 23, 6:36 am, "Jay R. Yablon" <jyab...@xxxxxxxxxxxx> wrote:
Can someone please explain or provide some links which explain how the
physics of a non-symmetric energy tensor would be different from that of
a symmetric energy tensor.
Especially, with the Poynting components
T^0k <> T^k0, k=1,2,3,
how would one interpret T^0k versus T^k0 and the physics of the energy
flux associated with each?
Thanks,
Jay,
____________________________
Jay R. Yablon
Email: jyab...@xxxxxxxxxxxx
co-moderator: sci.physics.foundations
Weblog:http://jayryablon.wordpress.com/
Web Site:http://home.nycap.rr.com/jry/FermionMass.htm
Non-symmetric energy tensors lead to 1) reducible theories and 2) non-
conservation of angular momentum. Any asymmetry is physically
irrelevant in any case, because by definition the energy-momentum of a
system is obtained by differentiating the action integral with respect
to g_mn (Hamiltonian derivative, dL/dg_mn - d/dx_k dL/dg_mn,k) which
is manifestly symmetric. The construction of the symmetric energy
tensor for any system was given definitively by Belinfante and
Rosenfeld.
-drl
.
- References:
- Query about non-symmetric energy tensors
- From: Jay R. Yablon
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