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Philipsmett
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Does in QFT static electricity work classically or is there a more fundamental explanation?
You want to say that in the QFT, the electron are also transfer from one person to another?Drakkith said:QFT (specifically QED, quantum electrodynamics) is the most fundamental theory regarding the EM force and all effects associated with it. There is nothing more fundamental. QED reduces to classical EM in some situations, and in these situations you can choose to use classical EM if you so choose.
As to your question in the thread title about people exchanging electrons, it's not clear what you mean by this. Electrons are transferred from one person to another if they touch each other and experience a static shock, but this isn't usually regarded as an 'exchange' as far as I know.
Philipsmett said:You want to say that in the QFT, the electron are also transfer from one person to another?
Philipsmett said:ou want to say that in the QFT, the electron are also transfer from one person to another?
Thank youPeterDonis said:Things don't happen "in QFT" or "in" any theory. They happen in reality. QFT is a theory that describes what happens using a particular model. For the case you are discussing, that model works out to be equivalent to the classical model of electromagnetism, but that doesn't mean the electron transfer "happens in" either model. It just happens, and the models describe it.
This is true, of course, but in the case of a spark or shock, it seems that charge has been balancedhilbert2 said:You can't even know if two electrons have been exchanged, because they're indistinguishable particles in QM.
Quantum Field Theory (QFT) is a theoretical framework used to describe the behavior of particles at the quantum level. It combines the principles of quantum mechanics and special relativity to explain the interactions of particles and fields.
In QFT, particles are represented as excitations in quantum fields. When two people touch, the electrons in their respective quantum fields interact with each other, exchanging energy and causing a force between them.
Exchanging electrons in QFT is essential for understanding the fundamental forces that govern our universe. It allows us to explain phenomena such as electricity, magnetism, and chemical bonding.
Yes, QFT and electron exchange have numerous real-life applications, such as in the development of new materials, technologies, and medical treatments. For example, QFT is used in the creation of transistors, which are essential components in electronic devices.
Yes, QFT is an active area of research, and scientists are continually exploring new theories and applications. Some current areas of focus include using QFT to understand the behavior of black holes and developing a unified theory that combines all four fundamental forces.