Self-tuning of cosmological constant and exit from inflation

I review the recent 5D self-tuning solutions of the cosmological constant problem, and try to unify two cosmological constant problems within the framework of the self-tuning solutions. One problem, the large cosmological constant needed for inflation, is interpreted by starting with the parameters allowing only the dS vacuum, and the vanishing cosmological constant at a true vacuum is realized by changing parameters by exit from inflation at the brane such that the self-tuning solution is allowed.Comment: Latex file of 8 pages, including 2 figures. Talk presented at COSPA-03, Taipei, Taiwan, Nov. 13-15, 200

Effective SUSY modified after LHC run

Some supersymmetric models after the recent LHC reports are discussed. Especially, the light Higgs boson around 125GeV is attempted to be accommodated. An extra Z' from GUTs, and the scalar and pseudoscalar Higgs bosons in supersymmetric extension of the standard model are also discussed.Comment: 11 pages with 6 figures. Talk presented at GUT 2012, Kyoto, 15-17 March 2012, and PASCOS 2012, Merida, Mexico, 3-8 June 201

Very Light Axion

I review the idea of axion, axion properties, and the superstring axion.Comment: Talk presented at The 5th IFT Workshop on Axions, Gainesville, Florida, March 11-13, 199

QCD Axion and Dark Energy

String allowed discrete symmetry is the mother of acceptable effective global symmetries at low energy. With this philosophy, we discuss dark energy, QCD axion, and inflation, and speculate some implications of the recent BICEP2 data.Comment: 5 pages, 2 figures. Talk presented at PATRAS 2014, CERN, 30 June 201

Baryogenesis by Heavy Quarks: Q-genesis

In this talk, I present a new mechanism for baryogenesis the Q-genesis in which the heavy quarks are the source of baryon number. There exists a narrow allowed region for the Q-genesis.Comment: 8 pages of CICHEP-II tal