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						<h1 itemprop="headline">AMO Seminar - Haruhide Miyagi: Theory for real time analysis of laser-driven many-electron dynamics in atoms and molecules</h1>
						
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														Thursday 21  November 2013,
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														&nbsp;at 15:15 -  16:00
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									<p><strong>Title:</strong> Theory for real time analysis of laser-driven many-electron dynamics in atoms and molecules
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<p><strong>Speaker:</strong> Haruhide Miyagi, IFA
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<p><strong>Time and place:</strong> Thursday 21/11, 15:15, Phys. Aud.<br><br><strong>Abstract:</strong>
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<p>Laser technology has continued to make remarkable progress and pronounce the need of reliable ab initio time-dependent (TD) many-electron theories for support to experiments on the real-time analysis and control of ultrafast electronic and nuclear dynamics of atoms and molecules by intense laser pulses. The TD configuration-interaction singles (TDCIS) method [1] is one of the simplest and the most well-known approaches in this research area. As another potential candidate, we developed the TD restricted-active-space self-consistent-field (TD-RASSCF) method [2]. Optimization of the orbitals as well as the expansion coefficients at each time step makes it possible to construct the wave function accurately while using only a relatively small number of electronic configurations. Importantly, it can be analytically shown that the TD-RASSCF method provides more precise descriptions of many-electron dynamics than the TDCIS method does. As a proof-of-principle application, one-dimensional model atoms are investigated: calculations of the ground-state wave functions, followed by computations of the high-order harmonic generation spectra. <br><br>[1] N. Rohringer, A. Gordon, and R. Santra, Phys. Rev. A 74, 043420 (2006).<br>[2] H. Miyagi and L. B. Madsen, Phys. Rev. A 87, 062511 (2013).
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<p><em>Coffee, tea and cake will be served at 15:05</em>.
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<p>Annette Svendsen, Jacob Sherson and Aurelien Dantan</p>
								
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