Parallel world theory, or multiverse, refers to a theory that has not been proved by physics. According to this theory, there are probably other universes outside our universe, which are a reaction to the possible state of the universe. These universes may have the same or different basic physical constants as the universes we know.
Parallel worlds say that when two parallel worlds meet, some people will suddenly appear, some people will leave forever, and some people will find true love. Space-time rift, parallel world, terrible time. Dare not love, just because there is no future. The physical laws of this kind of universe are roughly the same as ours, but the basic physical constants are different.
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The concept of parallel universe is not put forward because of the paradox of time travel, but comes from quantum mechanics, because quantum mechanics has an uncertainty, that is, quantum uncertainty. The concept of parallel universe benefits from the scientific discovery of modern quantum mechanics.
In 1950s, when some physicists observed quantum, they found that each quantum state was different. Since all matter in the universe is made up of quanta, these scientists speculate that the universe may be made up of many similar universes, not just one, because each quantum has a different state.
Whether the parallel world theory belongs to metaphysics rather than physics. As karl popper emphasized, the difference between physics and metaphysics lies in whether a theory can be proved and falsified by practice. Just because a theory contains unobservable entities does not mean that it is essentially untestable.
Baidu Encyclopedia-Parallel World Theory
Baidu encyclopedia-parallel universe
Chapter 1: Famous aphorisms about fatherly love on Father's Day.
1. It is the father's main shortcoming to let the children honor their ancesto