Revisiting the Origin of the Universe and the Arrow of Time

Abstract

We reconsider the old but yet unsolved problems, origin of the universe and the arrow of time. We show that only the closed universe is free from the singularity with the arrow of time symmetric with respect to the maximal size of the cosmic scale. The Wheeler-DeWitt equation is explicitly solved to obtain the local dynamical times. Corresponding to these local dynamical times, the thermodynamic arrow of time is proved to coincide with the arrows of dynamical time and of expanding universe (cosmological time). The proof is explicitly shown in two-dimensional spacetime.

11pages, 3 figures. Comments are added

References in corpus (5)

• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• The Emergence of Spacetime, or, Quantum Gravity on Your Desktop
• GA-NIFS: High number of dual active galactic nuclei at z~3