Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-02-14
Phys.Rev.D83:065028,2011
Physics
High Energy Physics
High Energy Physics - Theory
19 pages; 21 figures; v2 refs updated
Scientific paper
10.1103/PhysRevD.83.065028
We present simple new approximate formulas, for both scalar and spinor QED, for the number of particles produced from vacuum by a time dependent electric field, incorporating the interference effects that arise from an arbitrary number of distinct semiclassical turning points. Such interference effects are important when the temporal profile of the laser pulse has subcycle structure. We show how the resulting semiclassical intuition may be used to guide the design of temporal profiles that enhance the momentum spectrum due to interference effects. The result is easy to implement and generally applicable to time-dependent tunneling problems, such as appear in many other contexts in particle and nuclear physics, condensed matter physics, atomic physics, chemical physics, and gravitational physics.
Dumlu Cesim K.
Dunne Gerald V.
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