String theories and millisecond pulsars

Details String theories and millisecond pulsars String theories and millisecond pulsars

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phlb..214...14s&link_type=abstract

Physics Letters B, Volume 214, Issue 1, p. 14-18.

Physics

11

Scientific paper

We discuss the two ways of connecting string theories (cosmic, fundamental and the connection between them) to the observational reality: (i) radioastronomy observations (millisecond pulsar timing), and (ii) elementary particle phenomenology (compactification schemes). We study the limits imposed on the string parameter Gμ by recent millisecond pulsar timings. Cosmic strings derived from GUTs agree with (i). For cosmic strings derived from fundamental strings themselves there is contradiction between (i) and (ii). One of these scenarios connecting string theory to reality must be revised (or the transition from fundamental into cosmic strings rejected). Meanwhile, millisecond pulsar can select one scenario, or reject both of them.
UA 336 Laboratoire Associé au CNRS, Observatoire de Meudon et Ecole Normale Supérieure, 24 rue Lhomond, F-75231 Paris Cedex 05, France.

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