12828
20180501182159.0
1029-8479
10.1007/JHEP11(2015)159
DOI
2015-11-28T13:16:48Z
arXiv:1508.07132
arXiv
Iritani, Takumi
Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794-3800, U.S.A.
USA
Lattice study on QCD-like theory with exact center symmetry
2015-11-23
Springer/SISSA
22
We investigate QCD-like theory with exact center symmetry, with emphasis on the finite-temperature phase transition concerning center and chiral symmetries. On the lattice, we formulate center symmetric SU(3) gauge theory with three fundamental Wilson quarks by twisting quark boundary conditions in a compact direction ( Z 3 -QCD model). We calculate the expectation value of Polyakov loop and the chiral condensate as a function of temperature on 16 3 × 4 and 20 3 × 4 lattices along the line of constant physics realizing m PS / m V = 0.70. We find out the first-order center phase transition, where the hysteresis of the magnitude of Polyakov loop exists depending on thermalization processes. We show that chiral condensate decreases around the critical temperature in a similar way to that of the standard three-flavor QCD, as it has the hysteresis in the same range as that of Polyakov loop. We also show that the flavor symmetry breaking due to the twisted boundary condition gets qualitatively manifest in the high-temperature phase. These results are consistent with the predictions based on the chiral effective model in the literature. Our approach could provide novel insights to the nonperturbative connection between the center and chiral properties.
CC-BY-4.0
http://creativecommons.org/licenses/by/4.0/
The Author(s)
2015-11-26
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Confinement
author
Spontaneous Symmetry Breaking
author
Lattice Gauge Field Theories
author
Itou, Etsuko
KEK Theory Center, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan
Japan
Misumi, Tatsuhiro
Department of Mathematical Science, Akita University, 1-1 Tegata Gakuen-machi, Akita, 010-8502, Japan
Research and Education Center for Natural Science, Keio University, 4-1-1 Hiyoshi, Yokohama, Kanagawa, 223-8521, Japan
Japan
JHEP
1511
159
2015
65370
http://repo.scoap3.org/record/12828/files/main.xml
599883
http://repo.scoap3.org/record/12828/files/main.pdf?subformat=pdfa
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