We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole ...

In response, the physicists propose new definition of Markovianity. Traditionally, Markovian dynamics are defined for positive times only, introducing an implicit arrow of time. The researchers argue ...

Quantum systems may defy classical time irreversibility, revealing bidirectional entropy flow and prompting a reevaluation of ...

The origin of the arrows of time — sometimes called the master arrow of time — must thus be found in the history of our Universe, that is, in cosmology. This was already clear to Boltzmann.