Quantum Informational Dark Energy: Dark energy from forgetting

Understand

We suggest that dark energy has a quantum informational origin.

• Landauer's principle associated with the erasure of quantum information at a cosmic horizon implies the non-zero vacuum energy having effective negative pressure.
• Assuming the holographic principle, the minimum free energy condition, and the Gibbons-Hawking temperature for the cosmic event horizon we obtain the holographic dark energy with the parameter $d\simeq 1$, which is consistent with the current observational data.
• It is also shown that both the entanglement energy and the horizon energy can be related to Landauer's principle.