Higgs inflation in minimal supersymmetric SU(5) GUT Nobuchika Okada University of Alabama, Tuscaloosa, AL In collaboration with Masato Arai & Shinsuke Kawai arXiv:1107.4767, to be published in Phys. Rev. D. Miami 2011 @ Fort Lauderdale, Dec. 15-20, 2011 Related work in collaboration with Mansoor Ur Rehman & Qaisar Shafi
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Higgs inflation in minimal supersymmetric SU(5) GUT
Higgs inflation in minimal supersymmetric SU(5) GUT. Nobuchika Okada. University of Alabama, Tuscaloosa, AL. In collaboration with Masato Arai & Shinsuke Kawai. arXiv:1107.4767, to be published in Phys. Rev. D. Related work in collaboration with Mansoor Ur Rehman & Qaisar Shafi. - PowerPoint PPT Presentation
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Higgs inflation in minimal supersymmetric SU(5) GUT
Nobuchika Okada
University of Alabama, Tuscaloosa, AL
In collaboration with Masato Arai & Shinsuke KawaiarXiv:1107.4767, to be published in Phys. Rev. D.
Miami 2011 @ Fort Lauderdale, Dec. 15-20, 2011
Related work in collaboration with Mansoor Ur Rehman & Qaisar Shafi
The Standard Big-Bang Cosmology
The success of the Standard Big-Bang Cosmology
Hubble expansion Hubble’s law: expansion of the Universe
Cosmic Microwave Background (CMB) 2.725K radiation, Planck distribution Big-Bang nucleosynthesis Success in synthesizing light nuclei in the early Universe
De Simone, Hertzberg & Wilczek, PLB 678 (2009)1Barvinsky et al., JCAP 0912 (2009) 003
Realization of the non-minimal inflation model in supersymmetric model
The Standard Model of elementary particle physics
The best theory we know so far in describing elementary particle physics @ E=O(100 GeV)
Quarks & leptons
Gauge interactions QCD, weak, E&M
Higgs masses of particles
However,
Experimental results which cannot be explained by the SM ex) neutrino masses & mixings non-baryonic dark matter,…
Theoretical problems ex) The gauge hierarchy problem (stability of EW scale) Origin of electroweak symmetry breaking Fermion mass hierarchy, etc.
We need to extend the SM, New Physics beyond the SM
E ~ 1 TeV or higher
New Physics beyond the Standard Model takes place at high energies
Remember: inflation occurs at very high energies
We need to consider inflation scenario in the context of physics beyond the Standard Model
Supersymmetric theory is one of the promising candidate of new physics beyond the Standard Model
Inflation model in the context of SUSY (Supergravity)
Minimal Supersymmetric Standard Model (MSSM)
SUSY version of SM
quark, lepton (1/2) squark, slepton (0)
gauge boson (1) gaugino (1/2)
Higgs (0) Higgsino (1/2)
SM particles Superpartners
SUSY Grand Unification is strongly supported by measurement of Standard Model gauge couplings
Gauge coupling unification @
The Minimal SUSY SU(5) GUT
Standard Gauge Interactions are unified into SU(5) GUT gauge interaction
All quarks & leptons in the MSSM are unified into 5*+10
Particle contents
Higgs fields in the MSSM are included
New Higgs field to break SU(5) to the SM
Higgs inflation in the minimal SUSY SU(5) GUT
Supergravity Lagrangian in superconformal framework
Compensating multiplet:
Minimal SUSY SU(5) model (Higgs sector)
Arai, Kawai & N.O., To appear in PRD
We are interested in a special direction of the scalar potential
SU(5) SM
Normalized by reduced Planck scale
S is almost constant
Phi^4 inflation model with non-minimal coupling!
* This structure has been first pointed out by Ferrara, Kallosh, Linde, Marrani & Van Proeyen (PRD 82 (2010) 045003, PRD 83 (2011) 025008) in the context of Next-to-MSSM
Predictions We also examined quantum corrections, but their effects are found to be negligible
Summary
We study the inflationary scenario in the context of the minimal SUSY SU(5) GUT
We have found that the inflation model with non-minimal gravitational coupling is naturally implemented in the minimal SUSYT SU(5) GUT with an appropriate Kahler potential
The predicted cosmological parameters are consistent (almost best fit) with WMAP 7yr data
In the near future, on-going Planck satellite experiment will provide us more precise data which can discriminate different inflation models
Extension to other GUT models is possible which includes SU(5) as a subgroup (Example) SO(10) model
In the near future, on-going Planck satellite experiment will provide us more precise data which can discriminate different inflation models
?
Planck satellite experiment is on-going and plans to release the data in 2013