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Type: Artigo de periódico
Abstract: A generic model of string described by a Lagrangian density that depends on the extrinsic curvature of the string worldsheet is studied. Using a system of coordinates adapted to the string world sheet the equation of motion and the energy-momentum tensor are derived for strings evolving in curved spacetime. We find that the curvature corrections may change the relation between the string energy density and the tension. It can also introduce heat propagation along the string. We also find for the Polyakov as well as Nambu strings with a topological term that the open string end points can travel with a speed less than the velocity of light.
Country: EUA
Editor: American Physical Soc
Citation: Physical Review D. American Physical Soc, v. 46, n. 4, n. 1721, n. 1729, 1992.
Rights: aberto
Identifier DOI: 10.1103/PhysRevD.46.1721
Date Issue: 1992
Appears in Collections:Unicamp - Artigos e Outros Documentos

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