The virtual-particles tag has no wiki summary.
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Photon as the carrier of the electromagnetic force
My physics background goes as "far" as reading popsci books on QM, Particle Physics, and Cosmology so pardon my ignorance in the below questions.
I've read that the photon is the particle (quanta in ...
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How is it possible the speed of light is not constant?
I was reading this article recently, which summarizes a couple of new studies into the speed of light.
In one paper, Marcel Urban from the University of Paris-Sud, located in Orsay, France and his ...
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Why does Quantum Electrodynamics Allow a Photon to Exist Temporarily as a Positron and an Electron?
In this question...
Why does a photon colliding with an atomic nucleus cause pair production?
...I asked why a photon colliding with a atomic nucleus can become an electron and a positron. The ...
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Time taken for gravity of a distant object to interact with a newly created particle? [duplicate]
Possible Duplicate:
The speed of gravity
Does gravity travel at the speed of light?
Imagine there is a large mass $m_1$ (e.g. a star) 1 light-year away from us. It is stable, stationary ...
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Are field quanta 100% virtual? [duplicate]
Possible Duplicate:
Is all matter made of virtual particles?
Are field quanta 100% virtual? I am aware field quanta are just a process of creation and annihilation. Its asked because on ...
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Is all matter made of virtual particles?
This article in New Scientist says that all matter is actually virtual particles popping in and out of existence and nothing more. is this correct?
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What exists in the Space between atoms
Apologies to all if this has been asked before, I searched but was unable to find one similar.
This is a question that has been bugging me for a while that i haven't really been able to find a ...
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Is it possible that the Big Bang was caused by virtual particle creation?
As far as I understand, it is understood that throughout the universe there exists, what is known as, a quantum field from which, due to its fluctuations, temporary (pairs of) virtual particles ...
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Speed of light and virtual particles
After becoming extremely bored while studying for an Afrikaans exam, I started thinking about virtual particles. So, can light (photons) interact with virtual particles (even though they only exist ...
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What makes a Feynman diagram real or virtual?
Simple question: as the title says, what makes a real Feynman diagram real, and what makes a virtual diagram virtual? Or in other words, how do I tell whether any given diagram is real or virtual? ...
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photon and Z boson interference?
I'm not certain that this question will make sense, but here goes...
In most monte carlo generators, when Z events are produced, there is a lower mass cutoff on the Z pole. I've been told that this ...
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What really goes on in a vacuum?
I've been told that a vacuum isn't actually empty space, rather that it consists of antiparticle pairs spontaneously materialising then quickly annihilating, which leads me to a few questions.
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How do we distinguish between virtual particle exchange and particle decay?
The difference between virtual particles and unstable particles is discussed at length in this question (namely, virtual particles correspond to internal lines in Feynman diagrams and are not ...
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Virtual particles in semiclassical Quantum mechanics
(I'm just wondering if some of the concepts in QFT can be exported back to QM, especially the concept of virtual particle)
So I've just read Arnold Neumaier's description about virtual particle in ...
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The nature of time, according to quantum field theory
I will try my best to ask the question that best fits something I have been pondering on for a few days.
Are virtual particles really constantly popping in and out of
existence? Or are they ...
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1answer
179 views
Does path integral and loop integral in a Feynman diagram violate special relativity?
Consider a correlation function between two points A(x1,t1) and B(x2,t2), we need to integrate over paths which could be ...
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what causes virtual particle pair production to not occur in the space occupied by matter?
Are virtual particles only popping in and out of existence where the local energy density is below a certain point? What I wonder is, does any kind of matter prevent the pairs from appearing? Is ...
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Are W & Z bosons virtual or not?
W and Z bosons are observed/discovered. But as force carrying bosons they should be virtual particles, unobservable? And also they require to have mass, but if they are virtual they may be off-shell, ...
