計算物性物理メーリングリストのみなさま
東大の大久保です。
6月7日に下記の内容で統計力学セミナーをオンライン（Zoom）で開催します。
参加をご希望の方は大久保
t-okubo@phys.s.u-tokyo.ac.jp
までご連絡ください。
折り返し、Zoomの接続情報を送ります。
大久保 毅
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統計力学セミナー StatPhys Seminar @ UTokyo Hongo
sites.google.com/view/statphys-seminar
2021年6月7日（月）10:00〜11:00 (第3回) (3rd: 10am-11am, June 7, 2021)
秋山 進一郎氏（筑波大）Mr. Shinichiro Akiyama (Univ. of Tsukuba)
Title: Tensor renormalization group approach to fermions on a lattice
Abstract:
Tensor renormalization group (TRG) approach is a variant of the real-space renormalization group to evaluate the path integral in the thermodynamic limit, without resorting to any probabilistic interpretation for the given Boltzmann weight. Moreover, since the TRG can directly deal with the Grassmann variables, this approach can be formulated in the same manner for the systems with bosons, fermions, or both of them. These advantages of the TRG approach have been confirmed by the earlier studies of various lattice theories, which suggest that that the TRG potentially enables us to investigate the parameter regimes where it is difficult to access with the standard stochastic numerical methods, such as the Monte Carlo simulation.
In this talk, we explain our recent applications of the TRG approach to fermions on a lattice. Investigating both relativistic and non-relativistic interacting lattice fermions based on the path-integral formalism, we discuss the efficiency of the TRG approach, especially in the higher dimensions.
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大久保 毅
東京大学大学院理学系研究科物理学専攻 特任講師
〒113-0033 東京都文京区本郷7-3-1
東京大学大学院理学系研究科物理学専攻
理学部1号館9階 940
e-mail: t-okubo@phys.s.u-tokyo.ac.jp
Tel: 03-5841-4609
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