Chapter 15, Problem 1Q

To determine

The four fundamental interactions and the field particle that mediates each.

Answer to Problem 1Q

The four fundamental interactions are strong interaction carried by gluon, the weak interaction carried by W and Z bosons, electromagnetic interaction mediated by photon and gravitational interaction carried by graviton.

Explanation of Solution

The fundamental interactions are also known as fundamental forces. They are the interactions that do not appear to be reducible to more basic interactions. Each of the interaction can be described mathematically as a field. The four fundamental interactions are gravitational force, electromagnetic force, weak force and strong force.

The gravitational force is a long-range force and is described by general theory of relativity. The gravitational interaction is mediated by gravitons. Electromagnetic force is also a long-range interaction. They create electric and magnetic fields and are carried by photons. Weak interaction is a short-range force and act on nucleus of atoms. They are carried by W and Z bosons. Strong interactions are responsible to bind quarks together. They are mediated by gluons.

Conclusion:

Thus, the four fundamental interactions are strong interaction carried by gluon, the weak interaction carried by W and Z bosons, electromagnetic interaction mediated by photon and gravitational interaction carried by graviton.