Physics – Mathematical Physics
Scientific paper
2004-07-31
Commun. Math. Phys. vol 258, no. 3, 675-695 (2005)
Physics
Mathematical Physics
24 pages latex
Scientific paper
10.1007/s00220-005-1365-y
The proof of the existence of the thermodynamic limit for electrons and nuclei interacting via the Coulomb potential, in the framework of non-relativistic quantum mechanics, was accomplished decades ago. This result did not take account of interactions caused by magnetic fields, however, (the spin-spin interaction, in particular) or of the quantized nature of the electromagnetic field. Recent progress has made it possible to undertake such a proof in the context of non-relativistic QED. This paper contains one part of such a proof by giving a lower bound to the free energy which is proportional to the number of particles and which takes account of the fact that the field, unlike the particles, is never confined to a finite volume. In the earlier proof the lower bound was a `two line' corollary of the `stability of matter'. In QED the proof is much more complicated.
Lieb Elliott H.
Loss Michael
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