Phase Structure Study of SU(2) Lattice Gauge Theory with 8 Flavors
Cynthia Y.-H. Huang1*, Issaku Kanamori1, C.-J. David Lin1, Kenji Ogawa1, Hiroshi Ohki2, Enrico Rinaldi3
1Institute of Physics, National Chiao-Tung University, Hsinchu 300, Taiwan
2Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University, Nagoya, Aichi 464-8602, Japan
3Lawrence Livermore National Laboratory, Livermore, California 94550, United States of America
* presenting author:Cynthia Yu-Han Huang,
We present the investigation of the strong bare-coupling regime of SU(2) lattice gauge theory with 8 fermion flavors in the fundamental representation. One bulk phase transition is observed through the measurement of the plaquette. The order of this transition is identified through cold-start and hot-start simulations, hysteresis study, as well as the susceptibility of the plaquette. Using the smeared Polyakov loops, and a method inspired by the constraint effective potential, we analyze the vacuum structure near the confining-deconfining phase transition. The Dirac operator eigenvalue spectrum and topological charge are investigated, where more careful analysis is needed to clarify the properties of the chiral phase structure.

Keywords: Physics Beyond the Standard Model, Lattice Gauge Theory