%0 Journal Article
%T TWO-PARTICLE BOUND STATES IN THE QUANTUM SINE-GORDON FIELD THEORY IN (D+1) DIMENSIONS<br>
%A LU WEN-FA
%A XU BO-WEI
%A ZHANG YU-MEI
%A <br>
%J 中国物理 B
%D 1994
%I 
%X The two-particle states of the quantum sine-Gordon fields are studied variationally in (D+1) dimensions using the Gaussian wave functional approach. In both (1+1) and (2+1) dimensions, there exist two-particle bound states for certain ranges of coupling constant, where the vacuum states are stable. In the higher dimensions (D > 2), this approximation indicates that the two-particle states may be only the states consisting of two free particles, which is conformable to the triviality of the sine-Gordon field theory previously obtained in recent literatures.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=6A6C0BC09774AB040E84944BAD1F55F7&yid=3EBE383EEA0A6494&vid=38B194292C032A66&iid=F3090AE9B60B7ED1&sid=569BDAA4FEA0F7F9&eid=B3AAD7DC3C912B50&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=0