Resarch Activity

Sorted by objects

  1. Multidimensional Spectroscopy: Theories of 2D Raman, 2D IR, 2D THz-Raman, etc.
  2. Nonlinear optical processes:@Theories of pump-probe, photon echo, etc for analyzing electronic state dynamics.
  3. Proton, electron, and exciton transfer processes:@Studies of proton, electron, and exciton transfer processes and conversion between these processes in condensed phase. 
  4. Frustrated systems:@Studies of molecular systems coupled to spin glass environments
  5. Quantum transport and quantum information: Quantum ratchet, resonant tunneling diodes, heat-tranport, entanglement, etc.
  6. Organic conductors:@Quantum chemistry calculations and modeling of the BEDT-TTF and DCNQI molecules.

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Sorted by methods

bullet Hierarchy equations approach to quantum dissipative dynamics: non-perturbatice & non-Markovian quantum Fokker-Planck and master equations.
bullet Molecular Dynamics simulations for multi-dimensional spectroscopies: Calculating and analyzing multidimensional spectroscopy
bullet Stochastic theory: Stochastic theory and its applications
bullet Path Integral methods:@Analytical calculations using the influence functional, variational principles, and perturbative expansion.
bullet Monte Carlo Simulations:@Frustrated systems, single molecular detection, quantum spin glass
bullet Quantum chemistry calculations:  Resonating Hartree-Fock Method, Biorthogonal approach for explicitly correlated calculations

Lecture Notes

bulletLecture note on Learn Schrödinger, Dirac & Feynman formalisms in 90 minutes   (Zip file,  Sept 1, 2016)
bulletLecture note on the theory of multidimensional vibrational spectroscopy  (Zip file, NOV. 25 2016)
bulletLecture note on the theory of multidimensional electronic spectroscopy  (Zip file, NOV. 25 2016)
bulletLecture note on reduced hierarchy equations of motion   (Zip file, NOV. 25, 2016)

Program Codes

bulletMarkovian2005(Gaussian-Markovian master equation for a spin system coupled to 3D anisotropic baths)
bulletnonMarkovian2009 (with low temperature correction terms,   Jan 12, 2011 version)
bulletnonMarkovian2009+2D (with low temperature correction terms+ subroutines for linear and 2D correlation spectra,  Oct. 3rd, 2012 version)
bulletnonMarkovian2012+2D (Drude+Brownian mode)
bullet TanimuranFP15 (real-time and imaginary-time quantum hierarchal Fokker-Planck equations,   March 21 , 2015 version)
bulletGPU-HEOM  (HEOM code for CUDA) M. Tsuchimoto and Y. Tanimura, J. Chem. Theory Comput.,11, 3859 (2015).

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