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Loop Variables and the Virasoro Group
High Energy Physics - Theory · Submitted 14 Jul 1992
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We derive an expression in closed form for the action of a finite element of the Virasoro Group on generalized vertex operators.
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The abstract, sentence by sentence
We derive an expression in closed form for the action of a finite element of the Virasoro Group on generalized vertex operators. This complements earlier results giving an algorithm to compute the action of a finite string of generators of the Virasoro Algebra on generalized vertex operators. The main new idea is to use a first order formalism to represent the infinitesimal group element as a loop variable. To obtain a finite group element it is necessary to thicken the loop to a band of finite thickness. This technique makes the calculation very simple.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We derive an expression in closed form for the action of a finite element of the Virasoro Group on generalized vertex operators. | result 0.70 | 0.96 | 0.81 | asserted 1.00 |
| s1 | This complements earlier results giving an algorithm to compute the action of a finite string of generators of the Virasoro Algebra on generalized vertex operators. | background 0.90 | 0.12 | 0.08 | asserted 1.00 |
| s2 | The main new idea is to use a first order formalism to represent the infinitesimal group element as a loop variable. | contribution 0.60 | 0.84 | 0.13 | asserted 1.00 |
| s3 | To obtain a finite group element it is necessary to thicken the loop to a band of finite thickness. | method 0.98 | 0.71 | 0.06 | asserted 1.00 |
| s4 | This technique makes the calculation very simple. | interpretation 0.87 | 0.72 | 0.08 | asserted 1.00 |
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The paper
Original abstract
We derive an expression in closed form for the action of a finite element of the Virasoro Group on generalized vertex operators. This complements earlier results giving an algorithm to compute the action of a finite string of generators of the Virasoro Algebra on generalized vertex operators. The main new idea is to use a first order formalism to represent the infinitesimal group element as a loop variable. To obtain a finite group element it is necessary to thicken the loop to a band of finite thickness. This technique makes the calculation very simple.
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