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Editrice Compositori Bologna |
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In a few earlier communications, spatial-transverse-impulse response (STIR) associated with the initial field transversely distributed across the entrance pupil of an inhomogeneous optical wave guide (photoreceptor) has been investigated. In the[...]texto impreso
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In this work we use the recently proposed large-N limit of chiral perturbation theory at the leading order and in the chiral limit, to fit the pion scattering. We compute the effective action for pions in this approximation which is non-local. F[...]texto impreso
The motion of Klein-Gordon and Dirac particles in constant crossed electric and magnetic fields in addition to a confining scalar potential is studied in momentum space. The existence of bound states, as the electrostatic coupling is smaller tha[...]