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Reference.Variables.time

Burkhard Schmidt
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Variable "time" in MATLAB version of WavePacket

This global, structured(!) variable contains all information about temporal discretization (TDSE or LvNE or CLE or QCLE), external fields, initial states etc., for time-dependent calculations using qm_propa and/or qm_control and/or qm_optimal. All of these settings are ignored when you run a time-independent calculation using qm_bound.

Field name Matlab type description
time.dof Cell vector of objects of classes from +init Setting up initial wavefunction as product ¹
time.corr Object of class from +init Setting up initial wavefunction (fully correlated) ¹
time.propa Object of class from +tmp Choice of propagators (constant step size)
time.steps Object of class +tmp/steps Main time steps and sub-steps
time.efield Object of class +tmp/efield External electric field, interacting with dipoles and/or polarizabilities
time.hop Object of class +hop Main time steps and sub-steps
time.frog Structure Power spectral density and frequency resolved optical gating (for qm_optimal only)

¹ There are two different ways of setting up an initial wave function, either as a direct product of one-dimensional functions or as a correlated N-dimensional function. For using these two options, see above for the fields time.dof or time.corr, respectively. Specify only one of them, never both!

time.frog Choice and settings for power spectral density and frequency resolved optical gating (FROG), only available for qm_optimal default
choice 'PG': polarization gate
'SHG': second harmonic generation
'Gauss': cross-correlate with Gaussian bell
'none': no FROG is calculated
'none'
width Width σ of Gaussian bell time.main.delta
zoom zoom factor for frequency axes of PSD and/or FROG plots 1

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