Axion particle production in a laser-induced dynamical spacetime

M.A. Wadud, B. King, R. Bingham, G. Gregori

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
26 Downloads (Pure)


Abstract We consider the dynamics of a charged particle (e.g., an electron) oscillating in a laser field in flat spacetime and describe it in terms of the variable mass metric. By applying Einstein's equivalence principle, we show that, after representing the electron motion in a time-dependent manner, the variable mass metric takes the form of the Friedmann–Lemaître–Robertson–Walker metric. We quantize a pseudo-scalar field in this spacetime and derive the production rate of electrically neutral, spinless particles. We show that this approach can provide an alternative experimental method to axion searches.
Original languageEnglish
Pages (from-to)388-393
Number of pages6
JournalPhysics Letters B
Early online date19 Dec 2017
Publication statusPublished - 10 Feb 2018


  • charged particle dynamics
  • equivalence principle
  • electron motion
  • axions


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