Warped supersymmetry breaking
Abstract
We address the size of supersymmetrybreaking effects within string theory settings where the observable sector resides deep within a strongly warped region, with supersymmetry breaking not necessarily localized in that region. Our particular interest is in how the supersymmetrybreaking scale seen by the observable sector depends on this warping. We focus concretely on type IIB flux compactifications and obtain this dependence in two ways: by computing within the microscopic string theory supersymmetrybreaking masses in Dpbrane supermultiplets; and by investigating how warping gets encoded into masses within the lowenergy 4D effective theory. We identify two different ways to identify `the' 4D gravitino in such systems—the state whose supersymmetry is the least broken, and the state whose couplings are the most similar to the 4D graviton's—and argue that these need not select the same state in strongly warped settings. We formulate the conditions required for the existence of a description in terms of a 4D SUGRA formulation, or in terms of 4D SUGRA together with softbreaking terms, and describe in particular situations where neither exist for some nonsupersymmetric compactifications. We suggest that some effects of warping are captured by a linear A dependence in the Kähler potential. We outline some implications of our results for the KKLT scenario of moduli stabilization with broken SUSY.
 Publication:

Journal of High Energy Physics
 Pub Date:
 April 2008
 DOI:
 10.1088/11266708/2008/04/053
 arXiv:
 arXiv:hepth/0610255
 Bibcode:
 2008JHEP...04..053B
 Keywords:

 High Energy Physics  Theory
 EPrint:
 34 pages, 1 figure. v2 Further discussion of dual interpretation and gravitino mass