AmpForm 0.14.5

See all documentation for this version here.

🐛 Bug fixes

• sympy.Indexed is now accepted as key in ParameterValues (#336)

🖱️ Developer Experience

• Implemented caching for GitHub Actions workflows (#335)

AmpForm 0.14.4

See all documentation for this version here.

✨ New features

• Implemented perform_cached_doit() (#333)

🖱️ Developer Experience

• Fixed release drafter (#331)

AmpForm 0.14.3

Release 0.14.3

🐛 Bug fixes

• HelicityModel.rename_symbols() now works with scalar final state masses (#328)
• EnergyDependentWidth.subs()/.xreplace() now works correctly takes care of the phsp_factor choice (#330)

AmpForm 0.14.2

See all documentation for this version here.

✨ New features

• Implemented improve_latex_rendering() (#300)
• Implemented logging hierarchy (#320)
• SymPy v1.11 is now supported (#325)

⚠️ Changes that may affect behavior

• Insert parity prefactor as sympy.Rational (#322)

📝 Documentation

• Documentation on formulate_wigner_d() has been improved (#312)

🔨 Maintenance

• Switched from sphinx-panels to sphinx-design (#299)
• Switch to black's default 88 line width (#298)

🖱️ Developer Experience

• New ComPWA commit types and PR labels are now enforced (#323)

AmpForm 0.14.1

See all documentation for this version here.

💡 New features

• Implemented first version of ampform.io sub-module (#280)
• Implemented Kibble and Källén functions (#292)

⚠️ Interface

• Spin alignment is now deactivated by default (#295)

🖱️ Developer Experience

• All dependencies on are now pinned on Read the Docs as well (#276)
• Documentation is now built with sphinx-build (through tox) only, not through with make (#286)

AmpForm 0.14.0

See all documentation for this version here.

💡 New features

• Extracted formulate_form_factor() function (#262)
• Implemented PhaseSpaceFactorSWave, which uses the Chew-Mandelstam S-wave as a phase space factor (#265)

⚠️ Interface

• Renamed PhaseSpaceFactorAnalytic to EqualMassPhaseSpaceFactor (#264)
• Moved phase space factor definitions to ampform.dynamics.phasespace (#266)
• Naming functions return a sympy.Symbol instead of str (#269)
• ComplexSqrt is now blocked from 'unfolding' (#270)
• Assumptions on some parameter and variable symbols have changed (#271)

🐛 Bug fixes

• Implemented hash method for EnergyDependentWidth (#274)

📝 Documentation

• Updated references to PDG2021 (#262)
• Fixed comparison visualization widget for analytic continuation (#272)
• Fixed 2D complex plane widget for K-matrix (#273)

AmpForm 0.13.3

See all documentation for this version here.

💡 New features

• It's now possible to generate helicity couplings instead of amplitude coefficients (#256)

🔨 Internal maintenance

• It's now possible to install AmpForm with patches of SymPy v1.10 (#258)

AmpForm 0.13.2

See all documentation for this version here.

💡 New features

• Implemented coefficient naming switch (#252)

⚠️ Interface

• Dropped support for Python 3.6 (#249)
• Adapted implementations to SymPy v1.10 (#249)

🔨 Internal maintenance

• Simplified type hints with PEP 563 (#250)

📝 Documentation

• Added simple code examples to main usage page (#255)

AmpForm 0.13.1

See all documentation for this version here.

💡 New features

Implemented spin alignment for mismatching decay topologies (#6 and #245)

See problem description in TR-015 and usage example here. For an example with generated data, see TR-013.

⚠️ Interface

Helicity angle notation is now more concise (#208 and #209)

Compare old notation and new notation.

Removed decay/naming functions from kinematics (#227)

Cleaned up the kinemetics module by moving determine_attached_final_state() to helicity.decay and get_helicity_angle_label() to helicity.naming. Also extracted get_boost_chain_suffix() from get_helicity_angle_label() in preparation of #212.

Particle LaTeX names are now used in parameters names (#228)

Parameter names that include particle (resonance) names now render more nicely as LaTeX. Compare old rendering with new.

WARNING: You may have to modify your scripts if they get parameters by name from HelicityModel.parameter_defaults!

Other improvements:

• Particle LaTeX names in coefficient names are wrapped in curly braces so that they render correctly if there are also helicities as subscripts.
• Right sidebar (TOC) is unfolded unto the second level.
• attrs is rendered as an API link in code snippets as well.

🐛 Bug fixes

AmpForm can only be installed with SymPy v1.8 or v1.9 (#247)

See #248

AmpForm 0.12.6

See all documentation for this version here.

🐛 Bug fixes

AmpForm can only be installed with SymPy v1.8 or v1.9 (#247)

See #248