arXiv subjects

Shinji Hioki

Publications and source records attributed to Shinji Hioki.

2 recordsLinked to original sources

arXiv2006

The Z(2) gauge model revisited: as a possible testbed for the confinement and chiral symmetry phase transition of SU(2) lattice gauge theory

Adopting the cooling technique to smooth the discontinuous Z(2) lattice gauge field, we found that on SU(2) gauge configurations obtained by this smoothing there exists clear discontinuity of the topological property at almost the same point as the confinement-deconfinement phase transition of the original Z(2) gauge theory. This observation suggests the possibility that Z(2) gauge model might be a testbed for analyzing the relation between the confinement and the chiral phase transition in which the topological objects are believed to play crucial roles.

hep-lat↗

arXiv1997

Possible evidence for the mass shift of $η$' meson at finite temperature

Topological charge distributions of SU(3) gauge theory at finite temperature are calculated on the lattice with high statistics in a manner of free from the uncertainty of $β$-function. Clear temperature dependence of the topological charge distribution is obtained. Combining the present result with the recent study about the relation between the masses of $η$ meson system and the gauge field topology, we obtain $m_{η'}(T)/m_{η'}(0) = 0.86 \pm 0.02$ and $0.69 \pm 0.01$ for $T=0.75 T_c$ and $T=0.93 T_c$, respectively. The result shows the first clear evidence of the mass shift of $η'$ meson at finite temperature.

hep-lat↗