Generalised universality of gauge thresholds in heterotic vacua with and without supersymmetry

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Angelantonj, Carlo ; Florakis, Ioannis ; Tsulaia, Mirian (2015)
  • Publisher: Elsevier BV
  • Journal: (issn: 0550-3213, vol: 900, pp: 170-197)
  • Related identifiers: doi: 10.1016/j.nuclphysb.2015.09.007
  • Subject: Particle Physics - Theory | High Energy Physics - Theory | Nuclear and High Energy Physics
    arxiv: High Energy Physics::Theory | High Energy Physics::Phenomenology

We study one-loop quantum corrections to gauge couplings in heterotic vacua with spontaneous supersymmetry breaking. Although in non-supersymmetric constructions these corrections are not protected and are typically model dependent, we show how a universal behaviour of threshold differences, typical of supersymmetric vacua, may still persist. We formulate specific conditions on the way supersymmetry should be broken for this to occur. Our analysis implies a generalised notion of threshold universality even in the case of unbroken supersymmetry, whenever extra charged massless states appear at enhancement points in the bulk of moduli space. Several examples with universality, including non-supersymmetric chiral models in four dimensions, are presented.
  • References (83)
    83 references, page 1 of 9

    [1] R. Rohm, Spontaneous supersymmetry breaking in supersymmetric string theories, Nucl. Phys. B 237 (1984) 553.

    [2] C. Kounnas, M. Porrati, Spontaneous supersymmetry breaking in string theory, Nucl. Phys. B 310 (1988) 355.

    [3] S. Ferrara, C. Kounnas, M. Porrati, F. Zwirner, Superstrings with spontaneously broken supersymmetry and their effective theories, Nucl. Phys. B 318 (1989) 75.

    [4] C. Kounnas, B. Rostand, Coordinate dependent compactifications and discrete symmetries, Nucl. Phys. B 341 (1990) 641.

    [5] L. Alvarez-Gaume, P.H. Ginsparg, G.W. Moore, C. Vafa, An O(16) × O(16) heterotic string, Phys. Lett. B 171 (1986) 155.

    [6] L.J. Dixon, J.A. Harvey, String theories in ten-dimensions without space-time supersymmetry, Nucl. Phys. B 274 (1986) 93.

    [7] P.H. Ginsparg, C. Vafa, Toroidal compactification of nonsupersymmetric heterotic strings, Nucl. Phys. B 289 (1987) 414.

    [8] V.P. Nair, A.D. Shapere, A. Strominger, F. Wilczek, Compactification of the twisted heterotic string, Nucl. Phys. B 287 (1987) 402.

    [9] H. Itoyama, T.R. Taylor, Supersymmetry restoration in the compactified O(16) × O(16) heterotic string theory, Phys. Lett. B 186 (1987) 129.

    [10] T.R. Taylor, Model building on asymmetric Z3 orbifolds: nonsupersymmetric models, Nucl. Phys. B 303 (1988) 543.

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