Abstract

We investigate extra, spatial dimensions (D = 3 + ?) in the early universe using very high resolution molecular rotational spectroscopic data derived from a large molecular cloud containing moderately cold carbon monoxide gas at Z ? 6.42. It turns out that the ?-dependent quantum mechanical wavelength transitions are solvable for a linear-molecule and we present the solution here. The CO microwave data allows a very precise determination of ??? = -0.00000657 ± 0.10003032. The probability that ??? =? 0 is one in 7794, only 850 million years (using the standard cosmology) after the Big Bang.