AmpForm 0.16.0

See all documentation for this version here.

✨ New features

• Implemented general Chew–Mandelstam dispersion integral (#480)

⚠️ Enhancements and optimizations

• Merged symplot module into (#485)
• Converte chew_manelstam_s_wave() to ChewMandelstamSWave expression class (#493)
• HelicityModel no supports attributes that contain MatrixSymbols (#495)
• Support more numerical integration algorithms (#492)

⚠️ API changes

• Merged symplot module into (#485)
• Removed HelicityAmplitudeBuilder.set_dynamics() (#489)
• Convert chew_manelstam_s_wave() to expression class (#493)
• Support more numerical integration algorithms (#492)
• Reorganized tutorial pages (#497)

⚠️ Changes that may affect behavior

• Numerical integral along real axis is now stabilized through algorithm configuration (#490)

🐛 Bug fixes

• Numerical integral along real axis is now stabilized through algorithm configuration (#490)
• HelicityModel no supports attributes that contain MatrixSymbols (#495)

📝 Documentation

• remove symplot (#485)
• reorganize tutorial pages (#497)

🔨 Maintenance

• Removed symplot (#485)
• Support more integration algorithms (#492)

🖱️ Developer Experience

• Switched to ty as (#485)

The full changelog as commits can be found here.

AmpForm 0.15.11

See all documentation for this version here.

✨ New features

• New expression classes (#484)
  • BreakupMomentumKallen
  • BreakupMomentumSingleSqrt
  • PhaseSpaceFactorKallen
  • PhaseSpaceFactorSingleSqrt

⚠️ Enhancements and optimizations

• PhaseSpaceFactor now uses a single square root again (#484)
• AmpForm is now tested Python 3.14 (#481)

⚠️ API changes

• Dropped support for Python 3.9 (#482)

📝 Documentation

• Added benchmarks and numerical precision investigation for different definitions of phase space factor (#484)

🔨 Maintenance

• Upgraded lock files (#481)

The full changelog as commits can be found here.

AmpForm 0.15.10

See all documentation for this version here.

⚠️ Enhancements and optimizations

• use aligned environment instead of array (#477)

⚠️ Changes that may affect behavior

• improve cut structure break-up momentum (#479)

The full changelog as commits can be found here.

AmpForm 0.15.9

See all documentation for this version here.

🐛 Bug fixes

• Insert dynamics into symmetrized amplitudes (#476)

🖱️ Developer Experience

• Switch to poe as task runner (#473)

The full changelog as commits can be found here.

AmpForm 0.15.8

See all documentation for this version here.

🐛 Bug fixes

• Make values in mapping hashable in cache_to_disk() (#470)

The full changelog as commits can be found here.

AmpForm 0.15.7

See all documentation for this version here.

This version introduces major improvements to the caching functions 🎉 All of them are available through:

from ampform.sympy import cached

✨ New features

• Implement partial_doit() function (#456)
• Collect cached SymPy functions in cached module (#457)
• Implement cached.unfold for amplitude models (#458)
• Implement cached.simplify etc (#467)

⚠️ Enhancements and optimizations

• Improve cache invalidation of @cache_to_disk (#459)
• Use memoization on functions in cached module (#464)
• Memoize get_readable_hash() (#466)

🖱️ Developer Experience

• Benchmark results are now stored in a separate repository (#460, #461, and #462)

The full changelog as commits can be found here.

AmpForm 0.15.6

See all documentation for this version here.

✨ New features

• Switch of expression caches with NO_CACHE environment variable (#454)
• Implement perform_cached_substitution() for cached substitution of symbolic expressions (#454)
• Set cache directory with COMPWA_CACHE_DIR (#454)

🐛 Bug fixes

• Fix is_integer() bug for QRules v0.10.4 (#450)

🔨 Maintenance

• Update lock files (#447)

The full changelog as commits can be found here.

AmpForm 0.15.5

See all documentation for this version here.

⚠️ Enhancements and optimizations

• Compute stable hash without need for PYTHONHASHSED (#444)

⚠️ API changes

• Change to Apache license (#432)
• Drop Python 3.7 & 3.8 support due to EOL (#440)
• Define dev dependencies as dependency groups (#441)

🔨 Maintenance

• Upgrade implementation to SymPy v1.13 (#435)

🖱️ Developer Experience

• Define developer environment with uv (#439)

The full changelog as commits can be found here.

AmpForm 0.15.4

See all documentation for this version here.

⚠️ Enhancements and optimizations

• cache Blatt–Weisskopf polynomials (#428)

🖱️ Developer Experience

• implement benchmark monitoring (#427)

The full changelog as commits can be found here.

AmpForm 0.15.3

See all documentation for this version here.

🐛 Bug fixes

• Use squared FormFactor in EnergyDependentWidth (#425)

📝 Documentation

• Hide sympified attributes from expression classes (#424)

The full changelog as commits can be found here.