- Spin = 1 => the wave function behaves the same after 1 rotation
- Spin = 1/2 => the wave function behaves the same after 2 rotations
- Spin have to be conserve
Elementary Parcile
But to understand the standar model, it’s more convenience to use the language of particle.
Fermions are matter particles.
Bosons are force particles.
Distinction between fermions and bosons
Lies in the quantum world. Particles that obey Pauli Exclusion Principle
, they’re Fermions. Otherwise, they’re bosons.
Everything can be reduced to just three matter particle (Fermions)
- Electron
- Up quark
- Down quark
- Electron neutrino
Proton have: two up quarks and a down
Neutron have: two down quarks and an up
Particle
Particle ()
Initialize self. See help(type(self)) for accurate signature.
Fermion
Fermion made up all of particle in our universe.
Fermion
Fermion ()
Initialize self. See help(type(self)) for accurate signature.
There’re two categories of particle in Fermion
: - Leptons - Quarks
Lepton
Lepton ()
Initialize self. See help(type(self)) for accurate signature.
Quark
Quark ()
Initialize self. See help(type(self)) for accurate signature.
Boson
Boson mediate how those matter interact with each other.
Boson
Boson ()
Initialize self. See help(type(self)) for accurate signature.
GaugeBoson
GaugeBoson ()
Initialize self. See help(type(self)) for accurate signature.
ScalarBoson
ScalarBoson (name)
Initialize self. See help(type(self)) for accurate signature.
Details | |
---|---|
name | the name of the particle |
HiggsBoson
HiggsBoson (name)
Initialize self. See help(type(self)) for accurate signature.
Details | |
---|---|
name | the name of the particle |
WaveFunction
WaveFunction ()
Initialize self. See help(type(self)) for accurate signature.