| Budget Amount *help |
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Research Abstract |
We have studied the low energy behavior of 4-dimensional many flovor non-abelian gauge theory. We focus on the SU(3) gauge theory coupled to 12 massless fermions. We measured the nonperturbative running coupling constant using the lattice numerical simulation. According to the perturbative two loop analysis, the Nf=12 SU(3) gauge theory might have a conformal fixed point in the infrared region. However, the coupling constant at the fixed point is large in the perturbative analysis, so that some nonperturbative studies are needed. We measured one of nonrerturbative renormalization coupling constant and finally found that there is a nontrivial conformal fixed point in the SU(3) Nf=12 theory . The numerical simulation also derives the critical exponent around the fixed point.
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