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Showing 2015 · gr-qcShow all
3 papers · 2 filters
gr-qc2015★ 5 cited
The Fresnel-Fizeau effect and the atmospheric time delay in geodetic VLBI
Kopeikin S. M., Han W. -B.
The Fresnel-Fizeau effect is a special relativistic effect that makes the speed of light dependent on the velocity of a transparent, moving medium. We present a theoretical formali…
gr-qc2015
Cosmic evolution of scalar fields with multiple vacua: generalized DBI and quintessence
Changjun Gao, You-Gen Shen
We find a method to rewrite the equations of motion of scalar fields, generalized DBI field and quintessence, in the autonomous form for\emph{arbitrary} scalar potentials. With the…
gr-qc2015★ 6 cited
Quintessence and phantom emerging from the split-complex field and the split-quaternion field
Changjun Gao, Xuelei Chen, You-Gen Shen
Motivated by the mathematic theory of split-complex numbers (or hyperbolic numbers, also perplex numbers) and the split-quaternion numbers (or coquaternion numbers), we define the…