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Title: Non-minimal quartic inflation in supersymmetric SO(10)

Here, we describe how quartic (λφ 4) inflation with non-minimal coupling to gravity is realized in realistic supersymmetric SO(10)models. In a well-motivated example the 16 -$$\overline{16}$$ Higgs multiplets, which break SO(10) to SU(5) and yield masses for the right-handed neutrinos, provide the inflaton field φ. Thus, leptogenesis is a natural outcome in this class of SO(10) models. Moreover, the adjoint (45-plet) Higgs also acquires a GUT scale value during inflation so that the monopole problem is evaded. The scalar spectral index n s in good agreement with the observations and r, the tensor to scalar ratio, is predicted for realistic values of GUT parameters to be of order 10 -3-10 -2.
 [1] ;  [2] ;  [3]
  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Ioannina Univ., Ioannina (Greece)
  2. Univ. of Alabama, Tuscaloosa, AL (United States)
  3. Univ. of Delaware, Newark, DE (United States)
Publication Date:
Grant/Contract Number:
SC0013880; SC0013680
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 765; Journal Issue: C; Journal ID: ISSN 0370-2693
Research Org:
Univ. of Alabama, Tuscaloosa, AL (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; N=1 supergravity; matter; cosmology; gravitino; origin; decay
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1356088