Relaxation of a system with a conical intersection coupled to a bath: A benchmark 24-dimensional wave packet study treating the environment explicitly

1998 ◽  
Vol 109 (9) ◽  
pp. 3518-3529 ◽  
Author(s):  
G. A. Worth ◽  
H.-D. Meyer ◽  
L. S. Cederbaum
Keyword(s):  
Wave Packet ◽  
Conical Intersection ◽  
Dimensional Wave

Wave Packet Dynamics in the Presence of a Conical Intersection

1997 ◽  
Vol 101 (19) ◽  
pp. 3454-3460 ◽  
Author(s):  
Paola Cattaneo ◽  
Maurizio Persico
Keyword(s):  
Wave Packet ◽  
Conical Intersection ◽  
Wave Packet Dynamics

Confinement and Transfer of a Two-Dimensional Wave Packet under Crossed Electric and Magnetic Fields

2001 ◽  
Vol 40 (Part 1, No. 3B) ◽  
pp. 1973-1976 ◽  
Author(s):  
Hidetoshi Takagi ◽  
Mitsuru Ishida ◽  
Nobuhiko Sawaki
Keyword(s):  
Magnetic Fields ◽  
Wave Packet ◽  
Two Dimensional ◽  
Electric And Magnetic Fields ◽  
Dimensional Wave

The development of three-dimensional wave-packets in unbounded parallel flows

1968 ◽  
Vol 32 (4) ◽  
pp. 801-808 ◽  
Author(s):  
M. Gaster ◽  
A. Davey
Keyword(s):  
Wave Packet ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Mean Flow ◽  
Physical Plane ◽  
Parallel Flows ◽  
Flow Velocity Profile ◽  
The Stability ◽  
Special Case ◽  
Dimensional Wave

In this paper we examine the stability of a two-dimensional wake profile of the form u(y) = U∞(1 – r e-sy2) with respect to a pulsed disturbance at a point in the fluid. The disturbed flow forms an expanding wave packet which is convected downstream. Far downstream, where asymptotic expansions are valid, the motion at any point in the wave packet is described by a particular three-dimensional wave having complex wave-numbers. In the special case of very unstable flows, where viscosity does not have a significant influence, it is possible to evaluate the three-dimensional eigenvalues in terms of two-dimensional ones using the inviscid form of Squire's transformation. In this way each point in the physical plane can be linked to a particular two-dimensional wave growing in both space and time by simple algebraic expressions which are independent of the mean flow velocity profile. Computed eigenvalues for the wake profile are used in these relations to find the behaviour of the wave packet in the physical plane.

Photoisomerization transition state manipulation by entangled two-photon absorption

2021 ◽  
Vol 118 (47) ◽  
pp. e2116868118
Author(s):  
Bing Gu ◽  
Daniel Keefer ◽  
Flavia Aleotti ◽  
Artur Nenov ◽  
Marco Garavelli ◽  
...  
Keyword(s):  
Wave Packet ◽  
Transition State ◽  
Product Yield ◽  
Photochemical Reactions ◽  
Photon Absorption ◽  
Conical Intersection ◽  
Two Photon ◽  
Wave Packet Dynamics ◽  
Photon Excitation ◽  
Two Photon Excitation

We demonstrate how two-photon excitation with quantum light can influence elementary photochemical events. The azobenzene trans → cis isomerization following entangled two-photon excitation is simulated using quantum nuclear wave packet dynamics. Photon entanglement modulates the nuclear wave packets by coherently controlling the transition pathways. The photochemical transition state during passage of the reactive conical intersection in azobenzene photoisomerization is strongly affected with a noticeable alteration of the product yield. Quantum entanglement thus provides a novel control knob for photochemical reactions. The distribution of the vibronic coherences during the conical intersection passage strongly depends on the shape of the initial wave packet created upon quantum light excitation. X-ray signals that can experimentally monitor this coherence are simulated.

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