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San K

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**The Pauli exclusion principle**: is the quantum mechanical principle that no two identical fermions (particles with half-integer spin) may occupy the same quantum state simultaneously

**Quantum entanglement**: the type of interaction is such that each resulting member of a pair is properly described by the same quantum mechanical description (state)

Pauli's exclusion does not apply to bosons, for example photons, because they have (full) integer spins.

What is the difference between a half integer and a (full) integer spin?