# A classical manifestation of the Pauli exclusion principle

@article{Bachas1998ACM, title={A classical manifestation of the Pauli exclusion principle}, author={Constantin Bachas and Michael B. Green}, journal={Journal of High Energy Physics}, year={1998}, volume={1998}, pages={015-015} }

The occupied and unoccupied fermionic BPS quantum states of a type-IIA string stretched between a D6-brane and an orthogonal D2-brane are described in M-theory by two particular holomorphic curves embedded in a Kaluza-Klein monopole. The absence of multiply-occupied fermionic states - the Pauli exclusion principle - is manifested in M-theory by the absence of any other holomorphic curves satisfying the necessary boundary conditions. Stable, non-BPS states with multiple strings joining the D6…

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