Axion particle production in a laser-induced dynamical spacetime

作者：Wadud M A; King B; Bingham R; Gregori G^*

来源：Physics Letters B, 2018, 777: 388-393.

DOI：10.1016/j.physletb.2017.12.039

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-Lemaitre-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.

• 出版日期2018-2-10