Lionsgate Films
Search results
Color is the strong interaction analog to charge in the electromagnetic force. The term "color" was introduced to label a property of the quarks which allowed apparently identical quarks to reside in the same particle, for example, two "up" quarks in the proton.
The force between quarks is known as the colour force (or color force) or strong interaction, and is responsible for the nuclear force. Since the theory of electric charge is dubbed "electrodynamics", the Greek word χρῶμα (chrōma, "color") is applied to the theory of color charge, "chromodynamics". History
Color Force is an American independent film and television production company founded in 2007 by producer and film executive Nina Jacobson after her 2006 termination as president of Disney's Buena Vista Motion Pictures Group. Its films include the Diary of a Wimpy Kid and The Hunger Games series.
Mathematically speaking, the color charge of a particle is the value of a certain quadratic Casimir operator in the representation of the particle. In the simple language introduced previously, the three indices "1", "2" and "3" in the quark triplet above are usually identified with the three colors.
How does the color (strong) force work? Colored quarks attract one another by exchanging gluons, of which there are eight types. Gluons are massless, have spin 1, travel at the speed of light, and carry both a color and a different anticolor.
This color factor is like $q_1q_2$ in electrostatics or $\mathbf{p}_1\circ\mathbf{p}_2$ for dipole-dipole forces, and will depend on the color state of the interacting particles in question. It is calculated by $$f = \frac{1}{4} (c_3^\dagger\lambda^\alpha c_1)(c_2^\dagger\lambda^\alpha c_4),$$ where summation is implied over $\alpha$.
The strong force that binds nucleons is analogous to electrodynamic dispersion forces. Color neutral hadrons, such as protons and neutrons, can attract each other at short distances (<10-15 m) from a residual of the color force that binds their quarks together. Recall that the color force increases with increasing distance.
