Nonspreading relativistic electron wavepacket in a strong laser field

Nonspreading relativistic electron wavepacket in a strong laser field

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A solution of the Dirac equation in a strong laser field presenting a nonspreading wave packet in the rest frame of the electron is derived.It consists of a generalization of the self-accelerating free electron wavepacket [I.Kaminer et al.

, Nat.Phys.11, 261 (2015)1745-247310.

1038/nphys3196] to the case with the background of a strong laser field.Built upon the notion of nonspreading for an extended relativistic wavepacket, the concept of Born rigidity for accelerated motion in SEA RICH OMEGA-3 LEMON D3 750/500 relativity is the key ingredient of the solution.At its core, the solution comes from the connection between the self-accelerated free electron wavepacket and the eigenstate of a Dirac electron in a constant and homogeneous gravitational Nail Dry Oil field via the equivalence principle.

The solution is an essential step towards the realization of the laser-driven relativistic collider [S.Meuren et al., Phys.

Rev.Lett.114, 143201 (2015)0031-900710.

1103/PhysRevLett.114.143201], where the large spreading of a common Gaussian wavepacket during the excursion in a strong laser field strongly limits the expectable yields.