03-512 Masao Hirokawa
Infrared Catastrophe for Nelson's Model (384K, Postscript) Nov 26, 03
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Abstract. We study the infrared catastrophe for Nelson's Hamiltonian, which has the external potential in a general class. We show that both, the divergence of the total number of soft photons and non-existence of any ground state, are due to the common reason under general condition.

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