Conservation Laws Corresponding to the Four Fundamental Forces

1. Strong Interaction

- Corresponding conservation laws:- Color charge conservation
- Baryon number conservation
- Isospin conservation (under high-energy approximations)
- Conservation of strangeness, charm, bottomness, and topness (flavor quantum numbers conserved in strong processes)

 

2. Electromagnetic Interaction

- Corresponding conservation laws:- Electric charge conservation
- Conservation of energy, momentum, and angular momentum
- Conservation of all flavor quantum numbers (lepton number, baryon number, quark flavor)

 

3. Weak Interaction

- Corresponding conservation laws:- Conservation of total lepton number and total baryon number
- Non-conserved quantities: parity P, charge conjugation C, isospin, strangeness, charm, and other flavor quantum numbers
- Only the global symmetry related to weak hypercharge is preserved; gauge symmetry undergoes spontaneous symmetry breaking

 

4. Gravitation

- Corresponding conservation laws:- Energy–momentum conservation
- Angular momentum conservation
- Corresponds to spacetime translation and rotation symmetries in general relativity

  

Brief Summary

- Strong interaction → Conservation of color charge and flavor quantum numbers
- Electromagnetic interaction → Electric charge conservation
- Weak interaction → Conservation of lepton number / baryon number (parity and flavor are not conserved)
- Gravitation → Conservation of energy-momentum and angular momentum