Entropy and an irreversible deterministic time-evolution coexist

Leonardo Pedro

Keywords: Entropy, Quantum Mechanics, Cosmology, Arrow of Time, CP violation, Baryon asymmetry

Abstract: We show that a unitary quantum time-evolution defines the random sampling of an irreversible deterministic time-evolution. The coexistence of time-symmetric laws of physics and an arrow of time, is due to unitarity and not entropy. We also study the baryon asymmetry.