Unitarity Problem in Nonlocal Field Theories Some Remarks on String Field Theory
Unitarity Problem in Nonlocal Field Theories Some Remarks on String Field Theory
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非局部场论中的幺正问题 对弦场论的一些评论
DOI：
10.1143/ptp.80.566
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发表时间：
1988
影响因子：
--
通讯作者：
S. Tanaka
中科院分区：
文献类型：
--
作者：
S. Tanaka
重新研究了非定域场论中曾被许多作者讨论过的哈密顿形式。在推广的Yang-Feldman方法中，海森堡场的渐近行为变得复杂，并威胁到物理S-矩阵的存在。这一结果被严格地应用于最近的弦场论。光锥框架下的后一种理论很好地避免了上述渐近性的麻烦，但又产生了光锥框架的另一个困难。
The Hamiltonian formalism in nonlocal field theories once discussed by many authors is reinvestigated. The asymptotic behavior of Heisenberg fields in the extended Yang-Feldman method becomes complicated and threatens the existence of the physicalS-matrix. The result is critically applied to the recent string field theory. The latter theory in the light-cone frame well avoids the above trouble of the asymptotic behavior, but there arises another difficulty characteristic of the light-cone frame.