Alcock-Paczynski Test with Model-independent BAO Data
  Cosmological tests based on the statistical analysis of galaxy distributions
usually depend on source evolution. An exception is the Alcock-Paczynski (AP)
test, which is based on the changing ratio of angular to spatial/redshift size
of (presumed) spherically-symmetric source distributions with distance.
Intrinsic redshift distortions due to gravitational effects may also have an
influence, but they can now be overcome with the inclusion of a sharp feature,
such as the Baryonic Acoustic Oscillation (BAO) peak. Redshift distortions
affect the amplitude of the peak, but impact its position only negligibly. As
we shall show here, the use of this diagnostic, with new BAO peaks from
SDSS-III/BOSS at average redshifts <z>=0.38, 0.61 and 2.34, disfavors the
current concordance (LCDM) model at 2.3 sigma. Within the context of expanding
Friedmann-Robertson-Walker (FRW) cosmologies, these data instead favor the zero
active mass equation-of-state, rho+3p=0, where rho and p are, respectively, the
total density and pressure of the cosmic fluid, the basis for the R_h=ct
universe.
