107 citations · 654 across the 20 of their papers we have counts for
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gr-qc2005
Spacetime metric from local and linear electrodynamics: a new axiomatic scheme
Friedrich W. Hehl, Yuri N. Obukhov
We consider spacetime to be a 4-dimensional differentiable manifold that can be split locally into time and space. No metric, no linear connection are assumed. Matter is described…
gr-qc2005
On the theory of the skewon field: From electrodynamics to gravity
F. W. Hehl, Yu. N. Obukhov, G. F. Rubilar +1
The Maxwell equations expressed in terms of the excitation and the field strength are metric-free and require an additional constitutive law in…
physics.optics2005
Measuring a piecewise constant axion field in classical electrodynamics
Yuri N. Obukhov, Friedrich W. Hehl
In order to settle the problem of the "Post constraint" in material media, we consider the propagation of a plane electromagnetic wave in a medium with a piecewise constant axion f…