Cambridge University scientists have recently succeeded in simulating a form of backward time travel. By manipulating the properties of quantum entangled particles, the team was able to change an event after it has occurred. However, the success rate for this change stands at 25%.
journals.aps.org
Lead author David Arvidsson-Shukur presented an interesting analogy to help us understand this complex concept. Imagine needing to send a gift on Day 1, but only knowing what gift to send on Day 2. By using their quantum entanglement manipulation, you can retroactively change your previous actions so that the gift sent on Day 1 is exactly what was wished for on Day 2.
According to the study published in the Physical Review Letters, the scientists used a simulation that entangled two particles. By manipulating one particle after gaining new information, they were able to retroactively affect the first particle and, therefore, change the past. However, this change occurred only 25% of the time.
This discovery raises both ethical and scientific questions. While fascinating, the ability to alter past events even theoretically questions the sanctity of Einstein's theories of relativity and other foundations of physics. It also makes one wonder about the ethics of changing past events.
According to the research team, there is a 75% chance that the simulation will fail to alter the past. This actually serves as a reassurance, as it doesn't completely overthrow existing physical theories. The researchers also emphasized that these are just simulations, not an actual "time machine."
Source article:
thedebrief.org
Nonclassical Advantage in Metrology Established via Quantum Simulations of Hypothetical Closed Timelike Curves
We construct a metrology experiment in which the metrologist can sometimes amend the input state by simulating a closed timelike curve, a worldline that travels backward in time. The existence of closed timelike curves is hypothetical. Nevertheless, they can be simulated probabilistically by...
Lead author David Arvidsson-Shukur presented an interesting analogy to help us understand this complex concept. Imagine needing to send a gift on Day 1, but only knowing what gift to send on Day 2. By using their quantum entanglement manipulation, you can retroactively change your previous actions so that the gift sent on Day 1 is exactly what was wished for on Day 2.
According to the study published in the Physical Review Letters, the scientists used a simulation that entangled two particles. By manipulating one particle after gaining new information, they were able to retroactively affect the first particle and, therefore, change the past. However, this change occurred only 25% of the time.
This discovery raises both ethical and scientific questions. While fascinating, the ability to alter past events even theoretically questions the sanctity of Einstein's theories of relativity and other foundations of physics. It also makes one wonder about the ethics of changing past events.
According to the research team, there is a 75% chance that the simulation will fail to alter the past. This actually serves as a reassurance, as it doesn't completely overthrow existing physical theories. The researchers also emphasized that these are just simulations, not an actual "time machine."
Source article:
Scientists Successfully Simulate Backward Time Travel with a 25% Chance of Actually Changing the Past - The Debrief
Scientists say they have simulated backward time travel system with a 25% chance of successfully changing the past.
thedebrief.org
