自由弦场论中的定域性- II
Locality in Free String Field Theory-II
摘要：
我们研究协变自由玻色弦场论，并探讨它的局域性（因果性）。我们发现协变弦场是严格的本地和协变的，但作用在一个无约束的Hilbert空间与不定的内积。从这些我们也定义了可观察的领域，其作用于物理希尔伯特空间与一个明确的内积。这些被证明是近似本地的。
英文摘要：
We study the covariant free bosonic string field theory and explore its locality (causality) properties. We find covariant string fields which are strictly local and covariant, but act on an unconstrained Hilbert space with an indefinite inner product. From these we also define observable fields which act on the physical Hilbert space with an definite inner product. These are shown to be approximately local.
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