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Non-relativistic Reduction of Spinors, New Currents and their Algebra

A specific mapping is introduced to reduce the Dirac action to the non-relativistic (Pauli - Schrödinger) action for spinors. Using this mapping, the structures of the vector and axial vector currents in the non-relativistic theory are obtained. The implications of the relativistic Ward identities in the non-relativistic limit are discussed. A new non-abelian type of current in the Pauli - Schrödinger theory is obtained. As we show, this is essential for the closure of the algebra among the usual currents. The role of parity in the non-relativistic theory is also discussed.

preprint2020arXivOpen access
Rabin BanerjeeDebashis Chatterjee
hep-th
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Rabin BanerjeeDebashis Chatterjee

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