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Boundary entropy of boundaries in one-dimensional critical systems was defined by I. Affleck and A. Ludwig in 1991. A classic example of such systems is a conduction defect at low temperature as described by the Kondo model. Boundary entropy has a number of peculiar properties, for example it can be negative. In this talk we will discuss how this quantity is defined and what are its known properties.

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Anatoly Konechny, Heriot-Watt University, Edinburgh
Seminarraum Theoretische Physik
Contact: Thomas Quella