Does entanglement interfere with causality?

In summary, the conversation discusses the concept of quantum entanglement and its implications for causality and determinism. It is suggested that observing one entangled particle can have an immediate effect on the state of the other, even if they are separated by a large distance. However, this raises questions about the nature of causality and the possibility of changing events in the past or future. The conversation also touches on the relationship between quantum mechanics and general relativity and the various interpretations of these theories. Ultimately, there is no consensus on the exact nature of quantum entanglement and its implications for causality and determinism.
  • #36
student34 said:
I am not sure about this, but wouldn't fixing an entangled electron on Earth potentially cause something physical to happen with the other electron in some very delicate contraption?
Not faster than light. If a measurement on Earth is going to cause a supernova one light year away, it can't cause the supernova faster than light.

student34 said:
For example, if we observe an electron on Earth that is entangled with an electron one light year from here, then doesn't that enable the electron to interact with objects, such as emit photons or the ability to interact with nearby electrons?
The other electron one light year away can certainly interact with other objects in its vicinity. But nothing measurable about those interactions changes if the entangled electron on Earth is measured.

You have asked the same question many different times now in this thread. The answer has not changed. It's not going to change no matter how many times you ask it.

Thread closed.
 
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<h2> What is entanglement?</h2><p>Entanglement is a quantum phenomenon where two or more particles become connected in such a way that the state of one particle affects the state of the other(s), regardless of the distance between them.</p><h2> How does entanglement work?</h2><p>Entanglement occurs when two particles are created or interact in such a way that their properties become correlated. This correlation remains even if the particles are separated by large distances.</p><h2> How does entanglement interfere with causality?</h2><p>Entanglement itself does not interfere with causality. However, it does challenge our understanding of causality because the entangled particles can seem to communicate with each other instantaneously, which goes against the principles of classical physics.</p><h2> Can entanglement be used for faster-than-light communication?</h2><p>No, entanglement cannot be used for faster-than-light communication. While the entangled particles may appear to communicate instantaneously, this does not violate the speed of light as no information is actually being transmitted between the particles.</p><h2> What are the implications of entanglement for quantum computing?</h2><p>Entanglement is a key component of quantum computing. It allows for the creation of quantum bits (qubits) that can store and process information in a fundamentally different way than classical bits. This makes quantum computing potentially much more powerful and efficient for certain types of calculations.</p>

FAQ: Does entanglement interfere with causality?

What is entanglement?

Entanglement is a quantum phenomenon where two or more particles become connected in such a way that the state of one particle affects the state of the other(s), regardless of the distance between them.

How does entanglement work?

Entanglement occurs when two particles are created or interact in such a way that their properties become correlated. This correlation remains even if the particles are separated by large distances.

How does entanglement interfere with causality?

Entanglement itself does not interfere with causality. However, it does challenge our understanding of causality because the entangled particles can seem to communicate with each other instantaneously, which goes against the principles of classical physics.

Can entanglement be used for faster-than-light communication?

No, entanglement cannot be used for faster-than-light communication. While the entangled particles may appear to communicate instantaneously, this does not violate the speed of light as no information is actually being transmitted between the particles.

What are the implications of entanglement for quantum computing?

Entanglement is a key component of quantum computing. It allows for the creation of quantum bits (qubits) that can store and process information in a fundamentally different way than classical bits. This makes quantum computing potentially much more powerful and efficient for certain types of calculations.

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