- #1
Mentz114
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Refering to this paper "Theoretical Aspects of Massive Gravity" (http://arxiv.org/abs/1105.3735) about the spin-2 boson field and GR.
The author uses the Fierz-Pauli action ( I quote the massless part)
##-\frac{1}{2}\partial_\lambda h_{\mu\nu}\partial^\lambda h^{\mu\nu} + \partial_\mu h_{\nu\lambda}\partial^\nu h^{\mu\lambda}##and states that these terms have the gauge symmetry
##\delta h_{\mu\nu} = \partial_\mu \xi_\nu + \partial_\nu \xi_\mu##
for a spacetime dependent gauge parameter ##\xi_\mu(x)##.
No problem there but I wonder if someone could show this explicitly ?
If I understand correctly this symmetry is diffeomorphism invariance, since Killings equations arise as the analog of conserved charges and currents.
The author uses the Fierz-Pauli action ( I quote the massless part)
##-\frac{1}{2}\partial_\lambda h_{\mu\nu}\partial^\lambda h^{\mu\nu} + \partial_\mu h_{\nu\lambda}\partial^\nu h^{\mu\lambda}##and states that these terms have the gauge symmetry
##\delta h_{\mu\nu} = \partial_\mu \xi_\nu + \partial_\nu \xi_\mu##
for a spacetime dependent gauge parameter ##\xi_\mu(x)##.
No problem there but I wonder if someone could show this explicitly ?
If I understand correctly this symmetry is diffeomorphism invariance, since Killings equations arise as the analog of conserved charges and currents.
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