Neutron spin quantum plasmas - Ferromagnetism as a relaxed state

Swadesh M. Mahajan, Felipe A. Asenjo

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


It is shown that a ferromagnetic "minimum energy relaxed state" is accessible to a neutron fluid. We model the neutron fluid as a spin quantum plasma where the electromagnetic interaction is trough the magnetic moment of the neutron. The neutron ferromagnetism results from the macroscopic spin alignment that occurs due to a profound interplay between the classical and spin quantum vorticities carried by the charge-less neutron fluid. The simplest manifestation of a neutron superfluidity comes about by an exact cancellation of the quantum and classical vorticities to create a helicity free system.

Original languageEnglish
Pages (from-to)1430-1433
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number21-22
StatePublished - 2 Sep 2013
Externally publishedYes


  • Ferromagnetism
  • Neutron quantum plasmas
  • Relaxed states


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