Kohtaroh Miura

Light composite scalar in eight-flavor QCD on the lattice

We present the first observation of a flavor-singlet scalar meson as light as the pion in

On the particle spectrum and the conformal window

N_f=8

Phase diagram at finite temperature and quark density in the strong coupling limit of lattice QCD for color SU(3)

QCD on the lattice, using the Highly Improved Staggered Quark action. Such a light scalar meson can be regarded as a composite Higgs with mass 125 GeV. In accord with our previous lattice results showing that the theory exhibits walking behavior, the light scalar may be a technidilaton, a pseudo Nambu-Goldstone boson of the approximate scale symmetry in walking technicolor.

Chiral phase transition at finite temperature and conformal dynamics in large N-f QCD

A bstractWe study the SU(3) gauge theory with twelve flavours of fermions in the fundamental representation as a prototype of non-Abelian gauge theories inside the conformal window. Guided by the pattern of underlying symmetries, chiral and conformal, we analyze the two-point functions theoretically and on the lattice, and determine the finite size scaling and the infinite volume fermion mass dependence of the would-be hadron masses. We show that the spectrum in the Coulomb phase of the system can be described in the context of a universal scaling analysis and we provide the nonperturbative determination of the fermion mass anomalous dimension γ∗ = 0.235(46) at the infrared fixed point. We comment on the agreement with the four-loop perturbative prediction for this quantity and we provide a unified description of all existing lattice results for the spectrum of this system, them being in the Coulomb phase or the asymptotically free phase. Our results corroborate the view that the fixed point we are studying is not associated to a physical singularity along the bare coupling line and estimates of physical observables can be attempted on either side of the fixed point. Finally, we observe the restoration of the U(1) axial symmetry in the two-point functions.

Quarkyonic Matter in Lattice QCD at Strong Coupling

We study the phase diagram of quark matter at finite temperature (

Chiral and deconfinement transitions in strong coupling lattice QCD with finite coupling and Polyakov loop effects

T

Phase diagram evolution at finite coupling in strong coupling lattice QCD

) and chemical potential (

Effective Potential in the Strong-coupling Lattice QCD with Next-to-Next-to-Leading Order Effects

\ensuremath{\mu}

BROWN-RHO SCALING IN THE STRONG COUPLING LATTICE QCD

) in the strong coupling limit of lattice QCD for color SU(3). We derive an analytical expression of the effective free energy as a function of

One, two, zero: Scales of strong interactions

T