Physical Significance of Planck Length

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Physical Significance of Planck Length

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Title: Physical Significance of Planck Length
Author: Padmanabhan, T.
Abstract: The significance of Planck length in a quantum gravity model is investigated by concentrating on the conformal degree of freedom. It is shown that Planck length is a lower bound to physical proper length in any space-time. It is impossible to construct an apparatus which will measure length scales smaller than Planck length. These effects exist even in flat space-time because of vacuum fluctuations of gravity. It is shown that these fluctuations lead to a high energy cut-off in flat space field theories, thereby removing the divergence problem. The oneloop corrections to a self interacting scalar field is computed and shown to be finite.
URI: http://hdl.handle.net/11007/50
Date: 1984-08-14


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