Mostrando 681 - 700 Resultados de 8,169 Para Buscar '"gravity"', tiempo de consulta: 0.26s Limitar resultados
  1. 681
    por Kanti, Panagiota, Tamvakis, Kyriakos
    Publicado 1997
    “…We consider the combined Yang Mills-Dilaton-Gravity system in the presence of a Gauss-Bonnet term as it appears in the $4D$ Effective Superstring Action. …”
    Enlace del recurso
    Enlace del recurso
  2. 682
  3. 683
  4. 684
  5. 685
  6. 686
  7. 687
    por Benakli, Karim, Davidson, Sacha
    Publicado 1998
    “…We make generic remarks about baryogenesis in models where the scale $M_s$ of quantum gravity is much below the Planck scale. These correspond to M-theory vacua with a large volume for the internal space. …”
    Enlace del recurso
    Enlace del recurso
  8. 688
    “…Recently it has been pointed out that the characteristic quantum-gravity scale could be as low as the weak scale in theories with gravity propagating in higher dimensions. …”
    Enlace del recurso
    Enlace del recurso
  9. 689
  10. 690
    “…We describe the main results that have been derived from the correspondence in the regime that the field theory is approximated by classical or semiclassical gravity. We focus on the case of the N=4 supersymmetric gauge theory in four dimensions, but we discuss also field theories in other dimensions, conformal and non-conformal, with or without supersymmetry, and in particular the relation to QCD. …”
    Enlace del recurso
    Enlace del recurso
  11. 691
  12. 692
  13. 693
    por Gherghetta, Tony
    Publicado 2000
    “…We present metric solutions in six and higher dimensions with a bulk cosmological constant, where gravity is localized on a 3-brane. The corrections to four-dimensional gravity from the bulk continuum modes are power-law suppressed. …”
    Enlace del recurso
    Enlace del recurso
  14. 694
  15. 695
    “…We study localization of gravity in flat space in superstring theory. We find that an induced Einstein-Hilbert term can be generated only in four dimensions, when the bulk is a non-compact Calabi-Yau threefold with non-vanishing Euler number. …”
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    Enlace del recurso
  16. 696
    “…We propose a phenomenological approach to the cosmological constant problem based on generally covariant non-local and acausal modifications of four-dimensional gravity at enormous distances. The effective Newton constant becomes very small at large length scales, so that sources with immense wavelengths and periods -- such as the vacuum energy-- produce minuscule curvature. …”
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  17. 697
  18. 698
    por Amelino-Camelia, G
    Publicado 2003
    “…On the basis of recent quantum-gravity results, I argue that insight on some quantum properties of spacetime can be obtained with experiments planned for the International Space Station, such as AMS and EUSO, and with satellite gamma-ray telescopes, such as GLAST.…”
    Enlace del recurso
    Enlace del recurso
  19. 699
    por Shan, G
    Publicado 2004
    “…The relation between discrete space-time, quantum collapse and quantum gravity is analyzed. A possible way to combine quantum and gravity in terms of the quantum collapse in discrete space-time is proposed. …”
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  20. 700
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