Some Issues In The Loop Variable Approach to Open Strings and an Extension to Closed Strings

Details Some Issues In The Loop Variable Approach to Open Strings and an Extension to Closed Strings Some Issues In The Loop Variable Approach to Open Strings and an Extension to Closed Strings

1993-07-14

arxiv.org/abs/hep-th/9307093v1

Nucl.Phys.B415:332-352,1994

Physics

High Energy Physics

High Energy Physics - Theory

24 pages

Scientific paper

10.1016/0550-3213(94)90114-7

Some issues in the loop variable renormalization group approach to gauge invariant equations for the free fields of the open string are discussed. It had been shown in an earlier paper that this leads to a simple form of the gauge transformation law. We discuss in some detail some of the curious features encountered there. The theory looks a little like a massless theory in one higher dimension that can be dimensionally reduced to give a massive theory. We discuss the origin of some constraints that are needed for gauge invariance and also for reducing the set of fields to that of standard string theory. The mechanism of gauge invariance and the connection with the Virasoro algebra is a little different from the usual story and is discussed. It is also shown that these results can be extended in a straightforward manner to closed strings.

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