NEW TREATMENT OF QUANTUM TUNNELING

We explore the implications of the recently proposed Langevin quantiza tion for quantum tunneling, working within the semiclassical approxima tion. As far as we can see, the present treatment is simpler and more straightforward than the path integral approach. In fact, no extra tri ck is needed and the correct result follows at once - as a consequence of general principles - from the representation of the propagator sup plied by the Langevin quantization. Further applications of the strate gy discussed in this Letter are pointed out.