Quasifree Second Quantization and Its Relation to Noncommutative Geometry
نویسنده
چکیده
Schwinger terms of current algebra can be identified with nontrivial cyclic cocycles of a Fredholm module. We discuss its temperature dependence. Similar anomalies may occur also in spin systems. In simple examples already an operator–valued cocycle shows up. Lectures given at the XXX–th Karpacz Winter School in Theoretical Physics, Poland, 1994.
منابع مشابه
The Erwin Schrr Odinger International Institute for Mathematical Physics Quasifree Second Quantization and Its Relation to Noncommutative Geometry Quasifree Second Quantization and Its Relation to Noncommutative Geometry
Schwinger terms of current algebra can be identiied with nontrivial cyclic cocycles of a Fredholm module. We discuss its temperature dependence. Similar anomalies may occur also in spin systems. In simple examples already an operator{valued cocycle shows up.
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