Regular Article – Theoretical Physics
The counting of Nambu–Goldstone bosons in a non-Hermitian field theory
The Open University of Hong Kong, 30 Good Shepherd Street, Homantin, Kowloon, Hong Kong, China
Accepted: 6 September 2020
Published online: 21 September 2020
We demonstrate that the number of Nambu–Goldstone bosons is always equal to the number of conserved currents inside the scenario of non-Hermitian field theories with spontaneous symmetry breaking. This eliminates the redundancies which normally appears in Hermitian field theories, specifically when the Lagrangian under analysis violates explicitly the Lorentz symmetry.
© The Author(s) 2020
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