What does excitation of a field mean?

The process of generating a magnetic field by means of an electric current is called excitation. Field coils yield the most flexible form of magnetic flux regulation and de-regulation, but at the expense of a flow of electric current.

What is an excitation of a quantum field?

Quantum excitation is the effect in circular accelerators or storage rings whereby the discreteness of photon emission causes the charged particles (typically electrons) to undergo a random walk or diffusion process.

What excitation means?

Definition of excitation : excitement especially : the disturbed or altered condition resulting from stimulation of an individual, organ, tissue, or cell.

Is an electron an excitation of a field?

QFT, from what I understand, describes the electron as an excitation of the electron field. Both of these models describe the electron as some excitation of a mathematical field permeating space and time.

Why are there virtual particles?

The existence of virtual particles is one of the strangest aspects of physics, but it’s a direct consequence of quantum physics. Virtual particles can exist because the uncertainty principle, in essence, allows them to carry a large fluctuation of energy, so long as they exist for only a brief period of time.

What is a virtual particle in physics?

A “virtual particle”, generally, is a disturbance in a field that will never be found on its own, but instead is something that is caused by the presence of other particles, often of other fields. Analogy time (and a very close one mathematically); think about a child’s swing.

How does an electron become a particle with the energy?

But the electron interacts with the photon field (i.e. the electromagnetic field) and can create a disturbance in it; in doing so it too ceases to be a normal particle and becomes a more general disturbance. The combination of the two disturbances (i.e. the two “virtual particles”) remains a particle with the energy,…

Is the disturbance in the electron field an electron particle?

The disturbance in the electron field is not an electron particle, and the disturbance in the photon field is not a photon particle. However, the combination of the two is just such as to be a nice ripple, with a well-defined energy and momentum, and with an electron’s mass.

What is the inter interaction of electrons and particles?

Interaction. An electron generates an electric field that exerts an attractive force on a particle with a positive charge, such as the proton, and a repulsive force on a particle with a negative charge. The strength of this force in nonrelativistic approximation is determined by Coulomb’s inverse square law.

https://www.youtube.com/watch?v=ynjGxBkcnTo