Pathway

class Pathway(leaf)

Bases: object

Collect information on a pathway based on KetBra tree leaf without specializing it to any specific vibrational mode of a molecule.

Parameters:

leaf (KetBra) – Leaf of a KetBra excitation tree.

Attributes

colors	Number of different optical frequencies requried to produce this pathway.
experimental_label	ground-state hole-burning, excited-states absorption, etc.
fields	List of Pathway attributes.
geo_label	Shorthand notation for js.
peak_label	Two-letter identifier for the 2D peak.
trans_label	Short hand notation for series of transitions in the pathway.
trans_label_deg	Ambiguous version of trans_label.
leaf	The leaf used to construct this pathway.
coherences	Coherences created by light-matter interactions.
transitions	Time-ordered transitions between states for the pathway.
js	Arguments for the G-factor.
light_inds	Ordering of polarization vectors in four-fold dipole-operator.
const	\((-1)^\kappa\left(\frac{i}{2\hbar}\right)^n\), where n is the order of interaction (usually 3) and \(\kappa\) is the sign factor due to multiple interactions on either ket- or bra-side of the density matrix.
tw_coherence	Whether the molecule is in coherent state after second interaction.
peak	Pair of strings representing coherences created by first and third interaction (2D peak label).
abstract_peak	Same as peak but using P-, Q-, R-branch notation instead of absolute J numbers.

Methods

T00s(angles)	Polarization tensor components \(T^{(0)}_0(\epsilon_i^{\ast}, \epsilon_j, \epsilon_k^{\ast}, \epsilon_l; k)\) for k=0,1,2
__init__(leaf)
custom_str([fields])	String representation including only attributes in fields.
from_kb_list(kb_list)	Make a list of Pathway's from KetBra list.
from_kb_tree(kb_tree)	Make a list of Pathway's from KetBra tree.
geometric_factor([relative, angles])	Geometric R-factor for pathway intensity for isotropic initial density matrix.
gfactors()	Geometric factors for k=0,1,2.
pprint([abstract, angles, print])	Pretty print this pathway.
print_diagram([abstract, print])	Pretty print double-sided Feynmann diagram.