## What are the 4 exchange particles?

All four of the fundamental forces involve the exchange of one or more particles….Exchange Forces.

Force Exchange particle
Electromagnetic Force photon
Weak Force W and Z
Gravity graviton

## Is a pion an exchange particle?

Pions are the exchange particles that hold protons(and neutrons) together in the nucleus. In this case, the Strong Force is called the ‘residual’ or ‘nuclear’ force. It is in effect a consequence of the main Strong Force, that holds quarks together in a nucleon.

What does a Feynman diagram show?

In theoretical physics, a Feynman diagram is a pictorial representation of the mathematical expressions describing the behavior and interaction of subatomic particles. The scheme is named after American physicist Richard Feynman, who introduced the diagrams in 1948.

### What is meant by an exchange particle?

When interaction between particles occurs there is a change in the energy state of each particle eg. one gains energy the other loses it. We know that mass and energy are interchangeable, we can therefore consider an ‘exchange particle’ going from one to the other.

### Is a pion a gluon?

The pion, as it turns out, contains not just two “valence” quarks but also a “sea” of virtual quarks that pop in and out of existence. In addition, the pion hosts gluons, which are the carriers of the strong force that binds quarks together (see 6 March 2017 Viewpoint).

Is there an anti gluon?

The set of all gluons contains the antiparticles of each member of itself. But while there is only one photon which is own antiparticle (it is a singlet), each specific gluon has an antiparticle distinct of itself. But its antiparticle is just another gluon and does not deserve to be called an “antigluon”.

## Are pions the same as gluons?

Yeah gluons are only the mediators of strong force between quarks “inside” protons or neutrons. Pions are actually the mediators between protons and neutrons.

## What are pions and kaons?

Pions and kaons are, along with protons and neutrons, the main building blocks of nuclear matter. They are connected to the Goldstone modes of dynamical chiral symmetry breaking, the mechanism thought to generate all hadron mass in the visible universe.