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Questions tagged [quantum-physics]

If your question is more physics and less philosophy, consider asking it on Physics.SE (possibly with the soft-question tag).

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About quantum interference: space and time

Questions that I hope are not completely devoid of physical meaning. Firstly, about space. Let be a Hilbert space, in which we can by definition establish the existence of complete and orthonormal ...
-1 votes
2 answers
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Is the universe "one-sided"? [closed]

I have asked this question on Physics Stack Exchange, but it was closed because it does not deal with mainstream physics, that is, physics for which some paper has been published. I think it is worth ...
10 votes
9 answers
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Why do most philosophers believe in a deterministic formulation of quantum mechanics?

After stumbling upon this recent survey from 2020, it is interesting to see that the most popular position (apart from being undecided) is hidden variables at 21.94%. As a reminder, a hidden-variable ...
11 votes
3 answers
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What do Philosophers think about the Many Worlds Interpretation of quantum mechanics?

One of the interpretations of quantum mechanics is the Many Worlds Interpretation which basically states that the universe as a whole develops like an unobserved quantum system, and any observation ...
3 votes
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Do ego-asymmetric theories invalidate the scientific method?

Suppose there is a physical theory that predicts that the observable physical laws differ when applied to the observer himself rather than to the other people, for any given observer. Would existence ...
2 votes
2 answers
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Why do particles need a signal to travel to another to affect it?

I was reading up on quantum entanglement, non locality, and how people interpret QM to still be local in the sense that it does not allow for faster than light communication signals. I have two ...
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1 answer
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Why things don't happen all at once?

Why was there a time between Big Bang and now? Why it did not happen all at once? Why is there a delay between two changes? Why delay (time) exists? Why are not all changes compressed into extremely ...
5 votes
9 answers
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Does quantum superposition enable the possibility of free will?

I've been thinking about the problem of free will. In a deterministic universe, it seems like everything is just dominoes falling, one after the other. No room for choice. But what about quantum ...
11 votes
16 answers
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Can Mathematics Fully Describe the Universe?

To what extent mathematics can capture all physical phenomena? Drawing an analogy from computer science: finite automata can handle regular expressions (does "(([a-z]))" match "((h))&...
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2 answers
154 views

Does the PSR fail only at the atomic level in quantum mechanics or also for groups of atoms?

It is commonly held, in modern physics, that it is impossible to predict when a particular atom will decay. This is often taken to mean that there is no particular reason why the atom decided to decay ...
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1 answer
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Is it there any specific and well known continuous/analog alternative to Wheeler's discrete "It from Bit"?

Physicist John A Wheeler (https://en.m.wikipedia.org/wiki/John_Archibald_Wheeler) suggested the concept of "law without law" and "it from bit" which suggested that the universe did not have any laws ...
2 votes
2 answers
220 views

Why were the founders of quantum mechanics idealists?

Max Planck, Schrodinger, Bohr, and other founders of quantum mechanics have all expressed an idealist or subjective idealist position: in other words, they believed reality is created by or dependent ...
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5 answers
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Quantum Physics and Deep Learning, What are possibilities? [closed]

I would like to ask to you a question that I have been wondering about for a while. What would be if we could record all the quantum behaviors (momentum, rotation, translation, etc) of atomic (or ...
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A quantum mechanical response to van Inwagen's rejection of the PSR

Peter van Inwagen famously rejected the PSR due to his argument that it implied necessitarianism: Take the conjunct C of all contingent facts. Being contingent itself, the PSR demands an explanation F....
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3 answers
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Is Schrödinger's cat a problem of how we define identity?

If we consider that a cat is composed of numerous atomic particles, defining particles in superposition presents no issue. A cat is a human construct to represent a grouping of atoms, and notions of ...
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A terrifying variant of Boltzmann's brain

I am new to this forum even though I have read a lot on the subject of boltzmann's brains and have come to a terrifying conclusion, the classic argument which for example Sean Carroll used, "The ...
2 votes
2 answers
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Are there any sources linking Schopenhauerian metaphysics (will as thing-in-itself) with our contemporary understanding of physics?

I'm especially interested if there are any attempts at reconciling Schopenhauer's metaphysical will with the seeming indeterministic nature of quantum physics. Thank you.
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6 answers
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What are the arguments for or against the wavefunction being a subjective vs an objective entity?

This question is related to the measurement problem in Quantum Mechanics. I want arguments in favor or against of these two viewpoints: The wavefunction is the ontological state of existence of ...
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7 answers
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What are the ontological implications of that “the universe is not locally real” in quantum mechanics?

Quantum mechanics is said to indicate that the universe is not “locally real”, because a particle is not in a defined state before measurement. But if a particle is not in a defined state, what is it ...
1 vote
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Are quantum epistemology and intuitionistic constructivism compatible?

A somewhat recent article coming out of the University of Toronto and the Institute for Theoretical Physics in Zurich claims "no": Constructivist epistemology posits that all truths are ...
1 vote
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Do acausal quantum events come in between two classical events?

You'll have to forgive my ignorance if the answer to this question has lots of examples of how and when this occurs. My knowledge of determinism is that it is a picture of a chain of events that goes ...
5 votes
5 answers
503 views

Is time not perceivable without motion or change?

As kind of a chicken or the egg question, does motion come before time? Doesn’t motion allow time to exist and no motion negate time from existing? If everything in the universe were completely frozen ...
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7 answers
263 views

How does quantum mechanics affect the probability of macro events?

Events in the world can be described on the macro scale or the micro scale. For events that occur in the macro scale, such as the shape of a particular rock that forms, would the rock have formed in ...
1 vote
4 answers
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Would a nonlocal interpretation of quantum mechanics be more parsimonious?

Under the traditional interpretation of quantum mechanics, there is no realism and no “definite” reality. However, arguably, there is also no locality, depending on how you understand the term. Of ...
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Does Quantum Entanglement Disprove the Principle of Locality?

Regarding the debate between quantum mechanics and determinism I have encountered a problem I can't find the answer to. It is my impression that in order to solve Bell's inequality you would have to ...
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2 answers
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Does quantum mechanics break the principle of local causality?

I keep reading that quantum mechanics, atleast the standard interpretation, is local. However, local seems to imply that there’s no informational transfer faster than the speed of light. But even if ...
6 votes
3 answers
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What kind of philosophy of the foundations of physics can there be?

I'm currently trying to read into topos foundations for theories of physics and I wonder if we are really able to give a philosophical foundation for what a possible future theory of physics should ...
1 vote
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Is there a need for a new field of natural-practical philosophy?

Natural philosophy is now generally known as physics. Some ancient universities still call it natural philosophy. But all of science could be included under the term, natural philosophy. There is also ...
1 vote
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Does quantum mechanics mean that we are far behind in understanding the physical universe?

Until a certain time, physicists were using Newtonian mechanics, and until this time they did not have much difficulty in solving problems with this method. After quantum mechanics was discovered in ...
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How does Quantum Mechanics affect the modern account of free will and determinism?

In the edition of Feb/Mar 2016 of the Philosophy Now Magazine says: Under Feel Free to Differ it says: [...] Determinism itself comes in different flavours. Hard determinism of the most absolute ...
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Does Bell’s theorem assume realism? If so, what kind of realism, philosophically?

This is a philosophical question. It deals with the physics that raise this question. I cite the very recent article by Philip Goff in Scientific American which explains its relevance. Bell’s theorem ...
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How do we know that the superposition of states in quantum mechanics is a real phenomenon? Does this have philosophical significance? [closed]

As far as I know, we can never directly observe the superposition of states of any particle. How do we then know that it is real in the first place? We have a theory, which isn’t fully defined in the ...
1 vote
5 answers
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Does the law of large numbers explain why quantum mechanics leads to statistical regularities?

When the question of why chancy effects in quantum mechanics lead to statistical regularities is proposed, it is often answered using the law of large numbers. When you have particles that can be ...
2 votes
3 answers
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Does knowledge of the scientific context aid consideration of philosophical questions?

Some fundamental philosophical questions are posed in the context of quantum physics. Does knowledge of the science aid consideration of these questions? Should the scientific background be explained ...
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4 answers
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Why are nonlocal deterministic theories considered less plausible than indeterminism?

As John Bell stated, I cannot say that action at a distance is required in physics. But I can say that you cannot get away with no action at a distance. Regardless of whichever interpretation of ...
1 vote
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Does quantum mechanics disprove the causal principle in philosophy?

The causal principle states that everything must have a cause. William Lane Craig argues that even in the cases of subatomic events in QM, there are certain necessary conditions that produce an effect,...
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The Copenhagen Interpretation: From Quantum Mechanics to Ethics?

I've been pondering an intriguing comparison lately, drawing parallels between the Copenhagen Interpretation in quantum mechanics and a hypothetical "Copenhagen Interpretation of Ethics". As ...
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4 answers
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Does the existence of a probability distribution in quantum mechanics imply that each measurement has a reason?

The evolution of the wave function which is determined by Schrödinger’s equation, is said to evolve deterministically. The wave function represents the probability distribution of potential ...
1 vote
2 answers
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Could events in the universe be necessary or inevitable even if not determined?

Let us suppose that inherent randomness (atleast partially) in the universe exists. By this, I mean that certain things especially in the micro world are not predictable even if on the macro scale, ...
3 votes
7 answers
642 views

Is quantum mechanics relevant/irrelevant to explain conscious processes?

According to the paper by Koch and Hepp The relation between quantum mechanics and higher brain functions: Lessons from quantum computation and neurobiology from 2007, quantum mechanics and its ...
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Does quantum immortality mean solipsism?

If when we die another universe is created in which we live, then would the people of that universe be real?( by that i mean conscious beings like myself) or am I misunderstanding QI?
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4 answers
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If standard quantum mechanics disproves determinism, why are probabilities the way they are?

In quantum mechanics, the probability, say, that a radioactive atom will decay is well defined. By the Born Rule, it says that the probability of obtaining any possible measurement outcome is equal to ...
2 votes
1 answer
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Books on the philosophy of quantum mechanics

As the title says, I am looking for books on the philosophy of quantum mechanics; more specifically on ontology and or epistemolgy. So far I've found Tim Maudlin's Philosophy of Physics: Quantum ...
2 votes
2 answers
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Questions about Quantum Logic?

Carl von Weizsäcker, who worked on the topic of Quantum Logic several times, said that Quantum Logic was temporal in contrast with Classical Logic which would be atemporal (that would mean that truth ...
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3 answers
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Looking at quantum physics from the perspective of Indian philosophy?

So the philosopher Anand Vaidya, makes the claim (minute 9:18): " .. There was a big movement in Indian philosophy to really look at quantum physics from the perspective of classical Indian ...
65 votes
19 answers
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In which way does quantum mechanics disprove determinism?

I've heard this pop up in a discussion with my physicist/engineer roommates, but didn't care to ask at the time. Now I'm mighty curious about it. Wikipedia doesn't really seem to say much on this ...
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3 answers
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What if time and quantum corrections were created because the idea of "god" was damaged?

Assuming the idea of "God" exists. In its most perfect form, should physics not be without the various quantum phenomena with a renormalizable gravitational theory? Perhaps the idea of ...
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Could a quantum computer simulate any system based on different types of logic?

Quantum computing is based on quantum mechanics (obviously) which has different logical rules than classical/Boolean logic. However, does this mean that a quantum computer could simulate or process ...
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Isn't the measurement postulate irrelevant to Wigner's friend extended?

So many physicists like Carroll use a variation of Wigner's friend to argue for the many worlds of many worlds. I shall stick to the Frauchiger and Renner version of the Wigner's-friend scenario which ...
3 votes
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Cause of the outcome of quantum events

Do quantum events have no definite cause , a cause but the cause is unknown, they have no cause, they simultaneously have a cause and do not have a cause , there is a known cause, causes of events at ...