scholarly journals Semiclassical evolution of quantum wave packets on the torus beyond the Ehrenfest time in terms of Husimi distributions

2017 ◽  
Vol 58 (6) ◽  
pp. 062102 ◽  
Author(s):  
Anton Trushechkin
Keyword(s):  
Wave Packets ◽  
Quantum Wave ◽  
Ehrenfest Time

NONADIABATIC EFFECTS IN FEMTOSECOND PHOTOIONIZATION OF NaI MOLECULE

2011 ◽  
Vol 10 (04) ◽  
pp. 509-518 ◽  
Author(s):  
HONG-BIN YAO ◽  
SHI-YING LIN ◽  
YU-JUN ZHENG
Keyword(s):  
Wave Packet ◽  
Photoelectron Spectroscopy ◽  
Wave Packets ◽  
Experimental Results ◽  
Nonadiabatic Coupling ◽  
Time Resolved ◽  
Nonadiabatic Effect ◽  
Pump And Probe ◽  
Quantum Wave ◽  
Nonadiabatic Effects

In this work, the nonadiabatic effects in the femtosecond photoionization of NaI molecule driven by pump and probe pulses are investigated theoretically using the accurate quantum wave packet method. The calculation with the inclusion of nonadiabatic coupling remarkably improves the agreement with experimental results of Jouvet et al. [J Phys Chen A101: 2555, 1997], indicating the importance of the nonadiabatic effect. Moreover, the dynamical evolutions of wave packets and their corresponding time-resolved photoelectron spectroscopy are presented both on the adiabatic and diabatic potentials. These comparisons contribute to further understanding of the influences of nonadiabatic effects in the femtosecond photoionization of NaI molecule.

On rephasing mechanisms of quantum wave packets

1989 ◽  
Vol 104 (1) ◽  
pp. 1-15
Author(s):  
M. Rosina ◽  
P. Van Leuven
Keyword(s):  
Wave Packets ◽  
Quantum Wave

scholarly journals SEMI-CLASSICAL WAVE PACKET DYNAMICS FOR HARTREE EQUATIONS

2011 ◽  
Vol 23 (09) ◽  
pp. 933-967 ◽  
Author(s):  
PEI CAO ◽  
RÉMI CARLES
Keyword(s):  
Initial Data ◽  
Classical Limit ◽  
Wave Packets ◽  
Superposition Principle ◽  
Approximate Solutions ◽  
Wave Functions ◽  
Nonlinear Superposition ◽  
Wave Packet Dynamics ◽  
Classical Wave ◽  
Ehrenfest Time

We study the propagation of wave packets for nonlinear nonlocal Schrödinger equations in the semi-classical limit. When the kernel is smooth, we construct approximate solutions for the wave functions in subcritical, critical and supercritical cases (in terms of the size of the initial data). The validity of the approximation is proved up to Ehrenfest time. For homogeneous kernels, we establish similar results in subcritical and critical cases. Nonlinear superposition principle for two nonlinear wave packets is also considered.

CONTROLLING WAVE PACKET INTERFERENCE OF DISSOCIATING MOLECULES BY SHAPING LASER PULSES IN FREQUENCY DOMAIN

2008 ◽  
Vol 07 (06) ◽  
pp. 1159-1169 ◽  
Author(s):  
YONG-CHANG HAN ◽  
KAI-JUN YUAN ◽  
SHU-LIN CONG
Keyword(s):  
Wave Packet ◽  
Frequency Domain ◽  
Laser Field ◽  
Wave Packets ◽  
Laser Pulses ◽  
Time Dependent ◽  
Pulse Excitation ◽  
Density Functions ◽  
Excitation Scheme ◽  
Quantum Wave

The interference of dissociating wave packets for the Br 2 molecule in femtosecond laser field is studied theoretically using time-dependent quantum wave packet method. The interference of dissociating wave packets can be determined by the spectrum of laser field. By shaping laser pulses in frequency domain, the corresponding R- and v-dependent density functions can be effectively controlled. Compared with the 2-pulse excitation scheme, the resolution of the interference patterns can be improved by using 3- and 4-pulse excitation schemes. The dissociating velocity can be steered by varying laser parameters.

scholarly journals How do wave packets spread? Time evolution on Ehrenfest time scales

2012 ◽  
Vol 45 (21) ◽  
pp. 215307 ◽  
Author(s):  
Roman Schubert ◽  
Raúl O Vallejos ◽  
Fabricio Toscano
Keyword(s):  
Time Evolution ◽  
Time Scales ◽  
Wave Packets ◽  
Ehrenfest Time
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