pySecDec 1.6.3

Added

• The command line integration interface of disteval now supports variable values specified as rational numbers (e.g. 1/3 instead of 0.3333).
• DistevalLibrary now supports variable values specified as strings (e.g. "0.3333"), and as sympy numeric objects (e.g. sympy.sympify("1/3")).
• pySecDec.algebra now defines the exponential function in the class Exp, which enables remainder_expression in MakePackage to include exp() factors and use their derivatives to define subtraction terms.
• High level test massive_ft_integral. Evaluates a massive flow-time integral which requires the newly added Exp class.
• Unit tests in test_algebra for the newly added Exp class.

Changed

• FORM updated to 4.3.1.
• Require recent version of numpy>=1.23.

Fixed

• The expansion order of the integrals key of the json format from disteval, in cases when the leading order of the prefactor is not zero.
• GPU results being slightly off in very rare cases with disteval.