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- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran SassoIT502 papers
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15 papers · 1 filter
Metal Rich RR Lyrae Variables: I. The Evolutionary Scenario
Giuseppe Bono, Filippina Caputo, Santi Cassisi +2
This paper presents evolutionary computations which investigate the theoretical predictions concerning metal rich RR Lyrae pulsators found both in the Galactic field and in the Gal…
Second Overtone Pulsators Among Delta Scuti Stars
Giuseppe Bono, Filippina Caputo, Santi Cassisi +3
We investigate the modal stability of stellar models at masses and luminosity levels corresponding to post main sequence luminous delta scuti pulsators. The envelope models have be…
Clusters of Galaxies as a Storage Room for Cosmic Rays
V. S. Berezinsky, P. Blasi, V. S. Ptuskin
It is demonstrated that clusters of galaxies are able to keep cosmic rays for a time exceeding the age of the Universe. This phenomenon reveals itself by the production of the diff…
Comments on Gepner Models and Type I Vacua in String Theory
C. Angelantonj, M. Bianchi, G. Pradisi +2
We construct open descendants of Gepner models, concentrating mainly on the six-dimensional case, where they give type I vacua with rich patterns of Chan-Paton symmetry breaking an…
Ample divisors on the blow up of P^3 at points
Flavio Angelini
We give a condition for certain divisors on the blow up of P^3 at points in general position to be ample. The result extends a theorem of G. Xu on the blow up of the projective pla…
Chiral Asymmetry in Four-Dimensional Open-String Vacua
Carlo Angelantonj, Massimo Bianchi, Gianfranco Pradisi +2
Starting from the type IIB string on the Z orbifold, we construct some chiral open-string vacua with N=1 supersymmetry in four dimensions. The Chan-Paton group depends on the (quan…