3 Answers

  1. You can also say as Sean Carroll usually says in his lectures. In reality, there are fields. When we look at them, we see particles. But what really exists is much broader than what we see. Therefore, we can really say that the electron in general exists only as an object of observation, and in nature there are stable fluctuations of the electromagnetic field.

  2. Because those who say this do not understand the interpretation of Kwantmech. Although, he can be a good scientist at the same time.

    In terms of the Copenhagen interpretation, we are trying to measure characteristics that a quantum system simply does not have. That is, we ask, for example, where is the wind? It is located everywhere at the same time. But if we want to find out a specific point , then we will have to really drive the wind to a point, which is an extremely unnatural state for it. So, in a second, it will be everywhere again. That is, the measurement affects the system.

    From the point of view of the multi-world interpretation, on the contrary, the system affects us, and we also find ourselves in a superposition of two states, or two worlds, call it what you will. And what we measure is what kind of world we are in, the one that corresponds to a photon at point A or a photon at point B. If we add up these worlds , we will get a normal photon again in the superposition A+B, just as nothing happened.

  3. Objective reality in quantum mechanics exists before measurement. There are quantum systems. For example, an atom. In general, there are quantum fields and their excitations, particles, for example, electrons. This system has a state, it can be coherent, for example, an electron with energy E flying along the z axis, or it can be mixed, for example, a superposition of an electron with energy E flying along the z axis and an electron with energy E2 flying along the x axis. When an experiment occurs, one of the states is realized, either on the z-axis or on the x-axis, and quantum mechanics predicts the probability. But superposition is not just a measure of our ignorance of the system, this is evident from the two-slit experiment´┐Żelementy.ru, the amplitudes of electron passage through each of the slits interfere and give an interference pattern on the screen. There may also be more bizarre states, such as a superposition of no electron, one electron, and three electrons. Then one of three states is realized in the experiment with corresponding probabilities. So there is an objective reality before measurement, it's just not the same as in ordinary life. And a specific scenario is implemented probabilistically. Philosophers have called this picture probabilistic determinism.

Leave a Reply