More on quantum mechanics

Greetings and salutations to all intelligent people in the meta-nation which is the internet.

Yesterday I made a blog about Schrödinger’s cat and the implications it has for quantum mechanics. Today I would like to talk about a more extreme Schrödinger’s cat experiment where the lowly cat is replaced for an actual scientist. This seems like a very crazy experiment to conduct and it is, because the scientist will most likely die, but maybe, just maybe, he will survive and live to test more stuff another day.

To find out why this experiment would ever be done, I will explain to you one explanation of the “one photon acts like a lot of photons” experiment that I talked about last time. The leading interpretation at the moment is that when something happens, say, a photon goes through a slit, or a radioactive atom decays, or you decide not to use conditioner in the shower, all of the possible outcomes are achieved with their respective wave functions, and these happen in different universes. What is interesting is that when something like Schrödinger’s cat happens, there is one universe in the multiverse where the cat dies almost instantaneously, and another universe where the cat does not die at all, and this happens with everything that happens in the universe, and other universes, and more universes. What this conjures up in my mind almost instantly in a tree, and I think it helps describe this well.

Probability diagram

A probability tree which shows well how this interpretation of quantum theory works

Imagine the world as it is now, there are two possibilities right now, you can continue to read this blog, or you can log off (which would be very rude) There will be one universe where you log off, this is universe A, and one where you continue reading, universe B. Now there are two ‘parallel’ universes. There will now be two choices in universe A, you decide to log back on, because you realize how rude what you did was, and one where you stay logged off. in universe B, you have two choices, you stay logged on because this is completely riveting stuff, and one where you do finally log off.

The universe that we do end up being in will be one of those possibilities, hopefully the one where you stay online. But that does not mean that the other universes do not exist, they still exist, but you and I cannot ever get back to that other universe. This explains the ‘one photon acting like lots’ experiments. It also means that occasionally, unlikely things will happen, like the cat not passing away. It also means that out there, in the multiverse, there is a universe where I am having a conversation with Michael Jackson and Elvis Presley.

That’s all for today, I will leave you with a quote from Michio Kaku, ” In fact, it is often stated that of all the theories proposed in this century, the silliest is quantum theory. Some say that the only thing that quantum theory has going for it, in fact, is that it is unquestionably correct.” Michio Kaku, a theoretical physicist, co-founder of string theory, a futurist and a popularizer of science.

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