منابع مشابه
Exponential and Power-Law Hierarchies from Supergravity
We examine how a d-dimensional mass hierarchy can be generated from a d+1-dimensional set up. We consider a d+1–dimensional scalar, the hierarchon, which has a potential as in gauged supergravities. We find that when it is in its minimum, there exist solutions of Hořava-Witten topology R × S/Z with domain walls at the fixed points and anti-de Sitter geometry in the bulk. We show that while stan...
متن کاملRealization of Minimal Supergravity
Minimal supergravity mediation of supersymmetry breaking has attracted much attention due to its simplicity, which leads to its predictive power. We consider how Nature possibly realizes minimal supergravity through inflationary selection of the theory. Minimality is impressively consistent with the present observational bounds and it might be tested with the aid of low-energy soft parameters o...
متن کاملHierarchies and textures in supergravity unification.
It is proposed that supergravity unified models contain in addition to the hidden and the visible sectors, a third sector which contains exotic matter with couplings to the fields of both the visible and the hidden sectors. After spontaneous breaking of supersymmetry exotic matter becomes superheavy and its elimination leads to quark-lepton textures at the GUT scale with a hierarchy in powers o...
متن کاملMinimal supergravity models of inflation
Sergio Ferrara,* Renata Kallosh, Andrei Linde, and Massimo Porrati Physics Department, Theory Unit, CERN, CH 1211 Geneva 23, Switzerland INFN—Laboratori Nazionali di Frascati, Via Enrico Fermi 40, I-00044 Frascati, Italy Department of Physics and SITP, Stanford University, Stanford, California 94305, USA Department of Physics, CCPP, NYU 4 Washington Place, New York, New York 10016, USA (Receive...
متن کاملConstraints on the minimal supergravity model from nonstandard vacua.
We evaluate regions of parameter space in the minimal supergravity model where “unbounded from below” (UFB) or charge or color breaking minima (CCB) occur. Our analysis includes the most important terms from the 1loop effective potential. We note a peculiar discontinuity of results depending on how renormalization group improvement is performed: One case leads to a UFB potential throughout the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1985
ISSN: 0550-3213
DOI: 10.1016/0550-3213(85)90153-1