This is a seminar jointly organized by the three groups working on quantum physics and technology at Department of Physics, Kindai University, namely Condensed-Matter Theory (CMT), Quantum Control (QC), and QMB Laboratories.
Scheduled talks
Fiscal year 2025
Time and date: 10:45-, April 9, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Furuchi, Rito (QMB)
Title: Theoretical study of frustrated quantum spin systems with exact diagonalization
Abstract: We study frustrated antiferromagnets using the exact diagonalization method. The type of frustration addressed in this research occurs in localized spin systems, such as those represented in half-filled Mott insulators. This frustration occurs when antiferromagnetic interactions construct networks with odd-gons as local structures, causing a variety of exotic phenomena. Extensive studies have been reported on the triangular lattice[1] and the kagome lattice[2] as typical frustrated systems. The Heisenberg model describes such localized spin systems.
Computational approaches such as the quantum Monte Carlo (QMC) method and the density matrix renormalization group (DMRG) method are effective methods to study the Heisenberg model. However, the QMC method suffers from the negative sign problem in frustrated systems, while DMRG faces challenges in interpreting results for systems with two or more spatial dimensions. To avoid these problems, we employ the exact diagonalization method, which, although restricted to systems with a small number of spins, can calculate frustrated system.
Time and date: 10:45-, April 16, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Yoshida, Takaharu (Tokyo University of Science)
Title: TBA
Abstract: TBA
Time and date: 10:45-, April 23, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Pelayo, Jose Carlos (QMB)
Title: TBA
Abstract: TBA
Time and date: 10:45-, April 30, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Tanaka, Airi (CMT)
Title: TBA
Abstract: TBA
Time and date: 10:45-, May 14, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Yabuuchi, Yoshihiro (QMB)
Title: TBA
Abstract: TBA
Time and date: 10:45-, May 21, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Sidharth Rammohan (QMB)
Title: TBA
Abstract: TBA
Time and date: 10:45-, May 28, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Danshita, Ippei (QMB)
Title: TBA
Abstract: TBA
Time and date: 10:45-, June 4, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Kasamatsu, Kenichi (CMT)
Title: TBA
Abstract: TBA
Time and date: 10:45-, June 11, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Kondo, Yasushi (QC)
Title: TBA
Abstract: TBA
Time and date: 10:45-, June 18, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Ueda, Kenta (QMB)
Title: TBA
Abstract: TBA
Time and date: 10:45-, June 25, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: TBA
Title: TBA
Abstract: TBA
Time and date: 10:45-, July 2, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: TBA
Title: TBA
Abstract: TBA
Time and date: 10:45-, July 9, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: Yuri, Takumi (Osaka Univ.)
Title: TBA
Abstract: TBA
Time and date: 10:45-, July 16, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: TBA
Title: TBA
Abstract: TBA
Time and date: 10:45-, July 23, 2025
Room: Simulation and Experiment Room, 3rd Floor, 31 East Bldg. + Webcast via Zoom
Speaker: TBA
Title: TBA
Abstract: TBA