Quasi-normal modes and fermionic vacuum decay around a Kerr black hole

A Coutant, P Millington

Research output: Contribution to journalArticlepeer-review


We analyze the instability of the non-rotating fermion vacuum in Kerr spacetimes. We describe how the co-rotating Fermi sea is formed as a result of a spontaneous vacuum decay. Most significantly, and drawing upon intuition gained from analogous electrodynamic processes in supercritical fields, we show that this decay process is encoded entirely in the set of quasi-normal fermion modes.
Original languageEnglish
Article number035005
Pages (from-to)1-24
Number of pages24
JournalClassical and Quantum Gravity
Issue number3
Early online date14 Jan 2019
Publication statusPublished - 7 Feb 2019


  • Dirac fields
  • Black holes
  • Quasi-normal modes
  • Vacuum decay


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