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[en] We show how to improve the dilute-gas expansion by including terms that correct double counting errors. The 1D double-well system is studied in detail. The effective correction potential diverges as the kink-antikink distance goes to zero and in this way provides a repulsive core to cut off the kink-gas density. Comparisons with the kink mass give limits to the applicability of the uncorrected kink gas. (orig.)
Journal
Nuclear Physics. B; ISSN 0550-3213; 
; v. 180(2); p. 275-293
; v. 180(2); p. 275-293