513 citations · 3k across the 139 of their papers we have counts for
11 papers · 2 filters
Formulation of Vector Manifestation in Hot and/or Dense Matter
Masayasu Harada
The vector manifestation (VM) was proposed as a novel manifestation of chiral symmetry in which the massless vector meson becomes the chiral partner of pion. In this write-up, I br…
Chiral Doubling of Heavy-Light Hadrons and the Vector Manifestation of Hidden Local Symmetry
Masayasu Harada, Mannque Rho, Chihiro Sasaki
Starting with a hidden local symmetry Lagrangian at the vector manifestation (VM) fixed point that incorporates heavy-quark symmetry and matching the bare theory to QCD, we calcula…
Large Nc and Chiral Dynamics
M. Harada, F. Sannino, J. Schechter
We study the dependence on the number of colors of the leading pi pi scattering amplitude in chiral dynamics. We demonstrate the existence of a critical number of colors for and ab…
The Pion Velocity at Chiral Restoration and the Vector Manifestation
Masayasu Harada, Youngman Kim, Mannque Rho +1
We study the effects of Lorentz non-invariance on the physical pion velocity at the critical temperature in an effective theory of hidden local symmetry (HLS) with the "vecto…
Vector Manifestation in Hot Matter and Violation of Vector Dominance
Masayasu Harada, Chihiro Sasaki
We summarize main mechanisms to realize the vector manifestation (VM), in which the massless vector meson becomes the chiral partner of pion, at the critical temperature in hot QCD…
Radiative Decays involving a0(980) and f0(980) in the Vector Meson Dominance Model
Deirdre Black, Masayasu Harada, Joseph Schechter
We summarize some features of the vector meson dominance model which was recently proposed for studying radiative decays involving the scalar mesons. Using the experimental values…
Meson masses in large Nf QCD from the Bethe-Salpeter equation
Masayasu Harada, Masafumi Kurachi, Koichi Yamawaki
We solve the homogeneous Bethe-Salpeter (HBS) equation for the scalar, pseudoscalar, vector, and axial-vector bound states of quark and anti-quark in large Nf QCD with the improved…
Vector Manifestation and Violation of Vector Dominance in Hot Matter
Masayasu Harada, Chihiro Sasaki
We show the details of the calculation of the hadronic thermal corrections to the two-point functions in the effective field theory of QCD for pions and vector mesons based on the…
Study of Scalar Mesons and Related Radiative Decays
D. Black, M. Harada, J. Schechter
After a brief review of the puzzling light scalar meson sector of QCD, a brief summary will be given of a paper concerning radiative decays involving the light scalars. There, a si…
pi+ pi0 Mass Difference in the Hidden Local Symmetry: A Dynamical Origin of Little Higgs
Masayasu Harada, Masaharu Tanabashi, Koichi Yamawaki
We calculate pi+ pi0 mass difference in the Hidden Local Symmetry (HLS) model, based on the Wilsonian matching and Wilsonian renormalization-gr…
Hidden Local Symmetry at Loop -- A New Perspective of Composite Gauge Boson and Chiral Phase Transition
Masayasu Harada, Koichi Yamawaki
We develop an effective field theory of QCD and QCD-like theories, based on the hidden local symmetry (HLS) model. We formulate the chiral perturbation theory with loops of rho as…