Unbounded GNS representations of a *-algebra in a Krein space
Unbounded GNS representations of a *-algebra in a Krein space
复制标题
Kerin 空间中 *-代数的无界 GNS 表示
DOI:
10.1007/bf00405258
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发表时间:
1989
影响因子:
1.2
通讯作者:
S. Ôta
中科院分区:
文献类型:
--
作者:
J. Antoine;S. Ôta
Given a*-algebraand a linear, nonpositive definite, functional on it, the GNS construction yields a representation ofin an indefinite metric space. We show that, if the functional satisfies a suitable condition, expressed in terms of a conditional expectation on, then the representation space is a Krein space. This provides an abstract setup for the description of a massless quantum field theory.