Simulating Quantum ‘Time Travel’ Disproves Butterfly Effect in Quantum Realm
(ScienceDaily) Using a quantum computer to simulate time travel, researchers at Los Alamos National Laboratory have demonstrated that, in the quantum realm, there is no ‘butterfly effect.’ In the research, information–qubits, or quantum bits–‘time travel’ into the simulated past.
One of them is then strongly damaged, like stepping on a butterfly, metaphorically speaking. Surprisingly, when all qubits return to the “present,” they appear largely unaltered, as if reality is self-healing.
“On a quantum computer, there is no problem simulating opposite-in-time evolution, or simulating running a process backwards into the past,” said Nikolai Sinitsyn, a theoretical physicist at Los Alamos National Laboratory and coauthor of the paper with Bin Yan, a post doc in the Center for Nonlinear Studies, also at Los Alamos. “So we can actually see what happens with a complex quantum world if we travel back in time, add small damage, and return. We found that our world survives, which means there’s no butterfly effect in quantum mechanics.”
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