Equivalence of the Brownian and Energy Representations


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Abstract

We consider two unitary representations of infinite-dimensional groups of smooth paths with values in a compact Lie group. The first representation is induced by the quasi-invariance of the Wiener measure, and the second representation is the energy representation. We define these representations and their basic properties, and then we prove that these representations are unitarily equivalent. Bibliography: 28 titles.

About the authors

S. Albeverio

Rheinische Friedrich-Wilhelms-Universit¨at

Author for correspondence.
Email: albeverio@iam.uni-bonn.de
Germany, Bonn

B. K. Driver

University of California

Email: albeverio@iam.uni-bonn.de
United States, La Jolla, San Diego

M. Gordina

University of Connecticut

Email: albeverio@iam.uni-bonn.de
United States, Storrs

A. M. Vershik

St.Petersburg Department of the Steklov Mathematical Institute, St.Petersburg State University, Institute of Problems of Transmission of Information

Email: albeverio@iam.uni-bonn.de
Russian Federation, St.Petersburg

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