Theory of Excitation Spectra of Electron-Phonon Coupled Systems(<Special Topics>Photo-Induced Phase Transitions and their Dynamics)

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概要

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• We present recent advances in understanding of the ground and excited states of the electron-phonon coupled systems obtained by novel methods of Diagrammatic Monte Carlo and Stochastic Optimization, which enable the approximation-free calculation of Matsubara Green function in imaginary times and perform unbiased analytic continuation to real frequencies. We analyze Rashba-Pekar exciton-polaron as a classic example of a system with self-trapping crossover and demonstrate basic features of the phenomenon. Analysis of unconventional self-trapping cases, such as Jahn-Teller driven crossover in one-dimensional systems and magnon-assisted localization in cuprates, is presented. Results on the optical conductivity of the Frohlich polaron are also discussed.

• 社団法人日本物理学会の論文
• 2006-01-15

著者

• Nagaosa Naoto

  Crest Department Of Applied Physics University Of Tokyo:correlated Electron Research Center National

• Nagaosa Naoto

  Crest Department Of Applied Physics University Of Tokyo:correlated Electron Research Center (cerc) N

• Mishchenko Andrei

  Crest Japan Science And Technology Agency (jst) Aist:rrc "kurchatov Institute

• Nagaosa Naoto

  Crest Japan Science And Technology Agency (jst) Aist:crest Department Of Applied Physics The Univers

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• Theory of Excitation Spectra of Electron-Phonon Coupled Systems(Photo-Induced Phase Transitions and their Dynamics)

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