Fine structure of strings |
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| Affiliation: | 1. Departamento de Física and CIMAT, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile;2. Institut Langevin, ESPCI, 1 rue Jussieu, Paris 75005, France;3. Laboratoire d’Acoustique de l’Université du Maine, UMR CNRS 6613, Av. O. Messiaen, 72085 Le Mans, France;1. Physics Department, The Catholic University of America, Washington, DC 20064, USA;2. Space Research Institute - RAS, Moscow, Russia;3. Planetary Geology, Geophysics, and Geochemistry Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;4. Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85721, USA;5. Planetary Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;6. CRESST/University of Maryland at Planetary Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;7. Astrochemistry Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;8. Department of Physics, University of Maryland, College Park, MD 20742, USA |
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| Abstract: | We show that the critical behavior of the string tension and most other important qualitative properties of strings are driven by a term in the action containing extrinsic curvatures, which is necessary to add to the Nambu-Goto term. Depending on the renormalization-group structure, strings can be “creased” (with non-zero surface tension at the critical point) or “smooth”. Candidates for both possibilities and their physical relevance are discussed. |
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