[I happen to have found 3 different published papers which state 3 mutually disagreeing formulas for the Schwinger creation rate, and I suspect all 3 wrong... but they all agree it is nonzero :)... ]

--No -- make that 4 papers with 4 mutually disagreeing formulas when we add EQ1 of http://arxiv.org/pdf/hep-th/0507174v2.pdf to the list. No wait, here is a 5th paper with a 5th disagreeing formula: http://arxiv.org/pdf/hep-th/0107135v2.pdf EQ10 (see also EQ 2,3,4)! This last formula (which is claimed to agree with EQ18 in [Sree ram Valluri, Darrell R. Lamm, Julian Mielniczuk: Applications of the representation of the Heisenberg–Euler Lagrangian by means of special functions, Canadian Journal of Physics 71,7-8 (1993) 389-397; erratum 72,9-10 (1994) 683-685] claims to be valid in any uniform E and B combination-field and always yields a positive pair-creation rate if |E.B|>0. (Incidentally, this paper also uses a formula from Ramanujan notebooks.) Neato, except the Valluri-L-M paper claims the E field must be above a critical threshold to produce pairs, which is SIMPLY FALSE, so why should I believe anything else they say? These guys are unbelievable! How can they do this? -- Warren D. Smith http://RangeVoting.org <-- add your endorsement (by clicking "endorse" as 1st step)