We know very well , in nature have large number of many body system.
There are two main categories of identical particles:
1.bosons:-
which can share quantum states,
2.fermions :-
which do not share quantum states as described by the Pauli exclusion principle.
identical particle theory are not limited to elementary particles such as electrons , subatomic particles , like as atomic nuclei , and as well as atoms , quasiparticles behave identical particles .
There is large number of molecules in material , similarly there is large number of atoms in molecules , and there is larger numbers of electron in atoms , large number of nucleons in nucles.
There are two main categories of identical particles:
1.bosons:-
which can share quantum states,
2.fermions :-
which do not share quantum states as described by the Pauli exclusion principle.
identical particle theory are not limited to elementary particles such as electrons , subatomic particles , like as atomic nuclei , and as well as atoms , quasiparticles behave identical particles .
There is large number of molecules in material , similarly there is large number of atoms in molecules , and there is larger numbers of electron in atoms , large number of nucleons in nucles.
We can't distinguish between electron - electron in atom , and nucleons- nucleons inside the nucles .
We can't distinguish between which electron first and which electron is second in electron-electron scattering Experiment's. So these types of particle are known as identical particle and this property of particle is known as indistinguish Hability.
We can consider examples in geometry system:
● Square
If we rotate square by an angle 90° then we can't distinguish between squire's .
● Equaletrial triangle
If we rotate Equaletrial triangle an angle 120° then we can't distinguish between Equaletrial triangle's