secdec is hosted by Hepforge, IPPP Durham



Changes after the release of pySecDec version 1.0

For release notes of later releases see the release page on github.

09.08.2017 release of pySecDec-1.2
  • [make_package] more efficient algebra
  • [util/integrator] add dedicated 1D integrator 'cquad'
  • [util/integrator] implement 'MultiIntegrator' to choose an integrator depending on the dimension of the integrand
26.06.2017 release of pySecDec-1.1.2
  • [make_package] fix unittest failing with python 3.6.1
  • [util/integrator] fix one dimensional integration
  • [util/integrand_container] fix memory access error in "complex_to_real"
30.05.2017 release of pySecDec-1.1.1
  • [make_package]: drop lower bound on 'requested_order'
  • [loop_integral]: fixed parameters of loop integral measure for integrals with both doubled and inverse propagators
  • fix geometric_ku decomposition method
20.04.2017 release of pySecDec-1.1
  • update documentation
  • added example 'easy'
  • update error propagation
29.03.2017 release of pySecDec-1.0

Changes after the release of SecDec version 3.0

02.03.2016 SecDec-3.0.9
  • Updated submit scripts compatible with CERN's lxplus
  • Bug fix related to the treatment of one-scale integrals with contour deformation
  • Updated the manual
26.09.2015 SecDec-
  • small bugfix in the general branch regarding epsabs and epsrel definitions
21.09.2015 SecDec-3.0.8
  • Fixing different specifications of epsabs and epsrel values for each order in eps now works again.
  • Imaginary sign fixed for single-scale one loop integrals when including numerical values in the ScalarProductRules in the math.m input file instead of general kinematic invariants.
03.06.2015 SecDec-3.0.7
    loop directory:
    • It is now possible to include constraints on kinematic invariants using the keyword "Mandelstamrelations" in the math.m input file, see the math.m template generated by "secdec -prep" for more info. These constraints can serve to remove spurious zeros in the F-function of the integrand. The zeros were previously also removed for four-point kinematics. However, the behaviour was not correct when the user chose to eliminate any other external momentum than p4 in combination with off-shell external legs.
    • The kinem.input file understands inputs of the type ^2, e.g. 2^2 can be entered as well as 2**2.
    general directory: (BIG thanks to Rudi Rahn for his fixes and improvements!!)
    • prefactor orders in the regulator epsilon of less than -1 are now possible
    • a negative prefactor order can now also be used in combination with the togetherflag
    • for each pole coefficient, the number of integration parameters is adapted to the number of variables which actually do occur in the corresponding functions
08.05.2015 SecDec-3.0.6
  • Parallelization of algebraic part switched off per default now
  • Removal of bugs when using the general branch
  • Minor changes when using Mathematica's NIntegrate with SecDec, removal of bugs
  • Improvements when using a cluster (inclusion of a batch submission script for the LSF system)
14.04.2015 SecDec-3.0.5
  • Explicit numerators can now also be used when giving zeros in the powerlist in the mathfile
11.03.2015 SecDec-3.0.4
  • Number of Feynman parameters corrected in the stage where an optimal lambda is found (called with contourdef=true)
  • install script no longer added to the user path when the SecDec folder is added to the bashrc (or similar) script
  • some bugs fixed related to the usage of batch systems
27.02.2015 SecDec-3.0.3
  • automated SecDec check scripts made compatible with usage of Ubuntu
  • Readme, manual included
26.02.2015 SecDec-3.0.2
  • bug fixed related to usage of more complicated prefactors
  • zeros in the powerlist now work with cutconstruct=True
  • bug fixed related to the handling of 1-loop tadpoles by the two new sector decomposition strategies
25.02.2015 SecDec-3.0.1
  • Missing "myatof" definition included for those integrals which do not contain any kinematic invariants other than masses

Changes after the release of SecDec version 2.1

last updated: August 09, 2017