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feat!: implement spin alignment#213

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Commits on Jan 30, 2022

• refactor: remove '+' sign from helicity angle labels

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• refactor: write reference frame indices as superscript

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• fix: remove angle plus signs in documentation

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• fix: skip linking cells with cell magic

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• style: update BetterBibTex bibliography style

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• docs: move formalism notebook to helicity

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• docs: introduce alignment problem in notebook

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• feat: implement formulate_rotation_on_spin_state()

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• refactor: return tuple of WignerD functions

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• docs: add example formulate_rotation_on_spin_state()

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• refactor: rename to formulate_helicity_rotation()

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• refactor: extract get_boost_chain_suffix()

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• feat: implement formulate_wigner_rotation()

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• feat: implement get_parent_id()

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• feat: implement count_parents()

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• feat: implement first version of alignment Wigner-D combinations

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• docs: illustrate usage of Wigner-D combinations

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• style: improve formulate_wigner_d example

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• build: install latest version of qrules

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• docs: render state 1 in green, not darkgreen

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• docs: set graphviz background color to transparent

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• docs: change final state colors to RGB

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• fix: spin_projection is helicity in the rest frame of the parent

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• style: merge cells where possible

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• build: upgrade to qrules latest commit

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• docs: indicate "opposite helicity" states in graphviz

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• docs: formulate alignment for A→U,0→0,1,2

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• fix: match subscript brackets in Wigner-D's

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• feat: implement PoolSum

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• fix: improve PoolSum latex printing

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• feat: implement PoolSum.cleanup() method

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• refactor!: formulate spin alignment with PoolSum

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• fix: switch sign of theta angle

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• fix: mix summation indices in Wigner-D functions

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• fix: identify helicity indices with resonance superscript

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• feat: extract is_opposite_helicity_state() function

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• feat: implement get_sibling_state_id()

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• chore: add lru_cache on get_boost_chain_suffix()

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• fix: remove reference state in favor of opposite helicity

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• docs: make opposite helicity states dashed in DOT visualization

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• docs: add generated terms S and U alignment

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• chore: remove count_parents() function

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• refactor!: enforce state 0 non-opposite helicity

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• fix: correct indices in U-summation

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• docs: remove doit on the final alignment

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• docs: widen final spin alignment sum cell

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• build: update to qrules#145

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• fix: switch topologies for S and U chain

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• fix: match angles in test after qrules update

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• refactor: move Topology functions to .decay module

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• fix: compute helicity angles for helicity states

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• feat: implement general BoostMatrix

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• test: check if boosting into restframe gives mass

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• refactor: move label functions to helicity.naming

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• test: boost into restframe gives mass

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• refactor: extract ThreeMomentum class

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• feat: implement NegativeMomentum

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• test: check inverse of BoostMatrix

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• chore: simplify einsum rendering ArrayMultiplication

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• refactor: use ComplexSqrt in boosting

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• feat: implement compute_boost_chain()

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• feat: implement compute_wigner_rotation_matrix()

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• feat: implement compute_wigner_angles()

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Commits on Jan 31, 2022

• Merge remote-tracking branch 'ComPWA/main' into 6-spin-alignment

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• Merge remote-tracking branch 'ComPWA/main' into 6-spin-alignment

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• ci: update pip constraints and pre-commit config

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• docs: show generated source code

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• docs: add numpy to intersphinx inventory

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• docs: show second level in left sidebar

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• docs: render generated code on separate page

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• ci: include doctests in coverage

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• ci: remove slow markers from test_compute_wigner_rotation_matrix_numpy()

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• fix: install ampform in ediable mode

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• Merge branch 'main' into 6-spin-alignment

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• docs: compute Wigner matrix for phase space sample

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• fix: change S into U

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Commits on Feb 1, 2022

• docs: add four-body decay example

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• fix: decrease level Four-body decay section

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• Merge branch 'main' into 6-spin-alignment

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• refactor: extract RapidityBoostMatrix with more sub-nodes

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Commits on Feb 2, 2022

• Merge branch 'main' into 6-spin-alignment

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• fix: add beta norm argument to RapidityBoostMatrix

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• fix: ignore generated-code.md if not executing notebooks

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• fix: perform doit() on BoostMatrix

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• refactor: hide RapidityBoostMatrix

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• docs: update note about slow lambdification

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• fix: speed up tests with cse=True

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• fix: replace ComplexSqrt with sp.sqrt

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• docs!: compute all Wigner-D angles

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Commits on Feb 3, 2022

• Merge branch 'main' into 6-spin-alignment

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• docs: extend docstrings with examples

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• docs: explain opposite helicity states

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• docs: unfold right sidebar unto second level

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• docs: render links to IPython API

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• docs: bundle angle expression cell output

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• docs: explain computation of Wigner rotations

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Commits on Feb 4, 2022

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• docs: link to tensorwaves PR

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• fix: check integral ang.mom. in builder

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• refactor: use particle latex in parameter names

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• fix: wrap particle name in curly braces

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• feat: extract ParameterValues mapping class

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• fix: relink _T to TypeVar

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• fix: switch to KeyError

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• Merge branch 'main' into 6-spin-alignment

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• fix: render attrs.evolve as link

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• fix: remove duplicate display import

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• Merge branch 'main' into 6-spin-alignment

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Commits on Feb 7, 2022

• Merge branch 'main' into 6-spin-alignment

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• fix: remove redundant transpose import

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• refactor: rename to _BoostMatrixImplementation

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• docs: render LaTeX and numpycode in BoostMatrix API

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Commits on Feb 16, 2022

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Commits on Feb 22, 2022

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Commits on Feb 25, 2022

• feat: implement PoolSum

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• fix: improve PoolSum latex printing

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• fix: use tuples in signature of PoolSum

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• feat: implement PoolSum.cleanup() method

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Commits on Feb 28, 2022

• test: verify number of amplitudes HelicityModel

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• feat: formulate intensity with summation symbol

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• fix: change formulate_spin_alignment() return type to PoolSum

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• feat: skip zero-spin if massless particle

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• chore: extract __create_amplitude_symbol()

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• refactor: construct HelicityAmplitudeNameGenerator from transitions

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• fix: correct transition group variable names

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• refactor: insert helicity symbol into spin alignment sum

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• fix: give helicity symbols rational assumption

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• fix: remove superscript from helicity symbol

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• docs: add total intensity equation

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• fix: square intensity expression

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• test: mark rotation Wigner lambdification as slow

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• refactor: distinguish amplitudes per topology

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• fix: skip zero-spin in rotation chain

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• feat: insert alignment sum

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Commits on Mar 2, 2022

• refactor: hide indices from PoolSum.free_symbols

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• fix: switch sign of opposite helicity in amplitudes

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• style: add _A subscript to decaying particle spin projection

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• fix: only remove zero-spin if result is non-empty

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• feat: require at least one value for each index in PoolSum

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• fix: unfold PoolSums in HelicityModel.expression

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• feat: add option to deactivate spin alignment

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• chore: extract HelicityModel.__formulate_aligned_amplitude()

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• feat: insert Wigner angles into kinematic variables

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• fix: import Literal from typing-extensions

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• docs: move spin-alignment notebook to TR-015

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