Full text here http://arxiv.org/PS_cache/arxiv/pdf/1003/1003.0720v1.pdfWe note that massless fields within the future and past light cone may be quantized as independent systems. The vacuum is shown to be a nonseparable state of these systems, exactly mirroring the known entanglement between the spacelike separated Rindler wedges. This leads to a notion of timelike entanglement. We describe an inertial detector which exhibits a thermal response to the vacuum when switched on at t=0, due to this property. The feasibility of detecting this effect is discussed, with natural experimental parameters appearing at the scale of 100 GHz.
"Entanglement between the Future and the Past in the Quantum Vacuum" refers to the theory that particles can become entangled with each other through the quantum vacuum, creating a connection between their future and past states. This phenomenon challenges our traditional understanding of cause and effect, as the future state of a particle can influence its past state.
Entanglement in the quantum vacuum occurs when two particles interact with each other, becoming entangled, and then separate. Even when separated, the particles remain connected through the quantum vacuum, allowing information to be shared between them and creating a link between their future and past states.
The idea of entanglement between the future and the past challenges our traditional understanding of causality and raises questions about the nature of time. It also has practical implications for quantum computing and communication, as entanglement can be used to transfer information between particles instantaneously.
At this point, entanglement between the future and the past is still a theoretical concept and has not been directly observed. However, experiments have been conducted that demonstrate the principles of entanglement and its potential for future applications.
Some theories suggest that entanglement between the future and the past may be evidence of parallel universes, where different versions of reality exist simultaneously. However, this is still a highly debated topic in the scientific community and requires further research and evidence to confirm.