According to this paper we do, which sounds very interesting.(adsbygoogle = window.adsbygoogle || []).push({});

arXiv:1607.00002 [pdf, other]

The dimensionless age of the Universe: a riddle for our time

Arturo Avelino (1), Robert P. Kirshner (1 and 2) ((1) Harvard University, (2) Gordon and Betty Moore Foundation)

Comments: 14 pages, 12 figures. Accepted for publication in the Astrophysical Journal (ApJ)

Subjects: Cosmology and Nongalactic Astrophysics (astro-ph.CO); General Relativity and Quantum Cosmology (gr-qc)

We present the interesting coincidence of cosmology and astrophysics that points toward a dimensionless age of the universe H_0*t_0 that is close to one. Despite cosmic deceleration for 9 Gyr and acceleration since then, we find H_0t*_0 = 0.96 +/- 0.01 for the LCDM model that fits SN Ia data from Pan-STARRS, CMB power spectra, and baryon acoustic oscillations. Similarly, astrophysical measures of stellar ages and the Hubble constant derived from redshifts and distances point to H_0*t ~ 1.0 +/- 0.1$. The wide range of possible values for H_0*t_0 realized during comic evolution means that we live at what appears to be a special time. This "synchronicity problem" is not precisely the same as the usual Coincidence problem because there are combinations of Omega_Matter and Omega_Lambda for which the usual coincidence problem holds but for which H_0*t_0 is not close to 1.

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# B Do we live in a privileged time

Have something to add?

Draft saved
Draft deleted

Loading...

Similar Threads - live privileged | Date |
---|---|

B Do we still live in a Big Bang Singularity? | Apr 18, 2017 |

I Are we living in a Boltzmann box ? | Feb 19, 2017 |

Alan Guth:Inflationary Cosmology live stream 10/31 | Oct 30, 2014 |

PLanck results live here | Mar 20, 2013 |

**Physics Forums - The Fusion of Science and Community**