ar X iv : h ep - t h / 04 10 07 1 v 1 7 O ct 2 00 4 DIVERGENCE OF THE 1 N f - SERIES EXPASION IN QED

ar X iv : h ep - t h / 04 10 07 1 v 3 4 A pr 2 00 5 DIVERGENCE OF THE 1 N f - SERIES EXPASION IN QED

The perturbative expansion series in coupling constant in QED is divergent. It is either an asymptotic series or an arrangement of a conditionally convergent series. The sums of these types of series depend on the way we arrange the partial sums for successive approximations. The 1/Nf series expansion in QED, where Nf is the number of flavours, defines a rearrangement of the perturbative series...

ar X iv : h ep - t h / 04 10 07 1 v 2 3 1 D ec 2 00 4 DIVERGENCE OF THE 1 N f - SERIES EXPASION IN QED

The perturbative expansion series in coupling constant in QED is divergent and is expected to be, at the best, conditionally convergent. The 1/Nf series expansion, where Nf is the number of flavours, defines a rearrangement of this perturbative series, and therefore, its convergence would serve as a proof that the perturbative series is, in fact, conditionally convergent.Unfortunately, the 1/Nf...

ar X iv : h ep - p h / 04 10 20 4 v 1 1 4 O ct 2 00 4 Heavy Quarkonium π + π − Transitions and a Possible bb̄qq̄ State

ar X iv : h ep - t h / 04 10 18 8 v 1 18 O ct 2 00 4 Spacetime quantization induced by axial currents

ar X iv : h ep - t h / 98 10 19 7 v 1 2 3 O ct 1 99 8 A Soluble Theory of Massless Scalar QED 2

In this brief report, we analyze a generalized theory of massless scalar QED2 and show that, unlike the conventional scalar QED2, it is free from infrared divergence problems. The model is exactly soluble and may describe, in an 1+1 dimensional space-time, noninteracting spin-one tachyons.