Optimising code generation with haggies

Reiter, Thomas

doi:10.1016/j.cpc.2010.01.012

Cited by 61 publications

(66 citation statements)

References 34 publications

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“…HG+cse [10] 4905 Best in literature Haggies [11] 7540 Table 4: FORM run time, compilation times and the time to evaluate the compiled formula 10 5 times (run) for a 13x13 determinant. All times are in seconds.…”

Section: Resultsmentioning

confidence: 99%

Compactifying formulas with FORM

Vermaseren¹

2014

Proceedings of 11th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology) —

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Starting with version 4.1 the symbolic manipulation program FORM has the capability to compactify output formula's to allow faster numerical evaluation. Here we discuss some of the methods used and show the results with a number of examples from automatically generated programs for one loop radiative correction calculations.11th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology)

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Section: Resultsmentioning

confidence: 99%

Compactifying formulas with FORM

Vermaseren¹

2014

Proceedings of 11th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology) —

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“…The virtual amplitudes have been obtained using GoSam [18], a public package for the automated generation of one-loop amplitudes. It uses Qgraf [19], FORM [20] and Spinney [21] for the generation of the amplitudes, which are optimized and written as a Fortran90 code with the use of Haggies [22]. For the reduction of the one-loop amplitudes we used Samurai [23], which performs a reduction at the integrand level based on the OPP-method [24].…”

Section: Setup Of the Calculationmentioning

confidence: 99%

Diphoton + jet at NLO

Greiner¹,

Gehrmann²,

Heinrich³

2014

Proceedings of 11th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology) —

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We present the next-to-leading order QCD corrections to the production of a photon pair in association with one or two jets. This class of processes constitutes an important background for Higgs physics at the LHC. For the one jet process we include photon fragmentation contributions and perform a comparison between different photon isolation criteria and various isolation parameters. The two jet calculation has been performed using a smooth cone isolation criterion. We find that the NLO QCD corrections are substantial and can lead to distortions of differential distributions.11th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology)

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“…All subexpressions which do not depend on eitherq or µ 2 are substituted by abbreviations, which are evaluated only once per phase space point. Each of the two parts is then processed by haggies [34], which generates optimised Fortran95 code for the numerical evaluation. For each diagram we generate an interface to SAMURAI [25], golem95C [27] and/or PJFRY [35,36].…”

Section: Pos(radcor2011)013mentioning

confidence: 99%

Automated one-loop calculations with Golem/Samurai

Heinrich¹

2013

Proceedings of 10th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology) —

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In this talk, the program package GOSAM is presented which can be used for the automated calculation of one-loop amplitudes for multi-particle processes. The integrands are generated in terms of Feynman diagrams and can be reduced by d-dimensional integrand-level decomposition, or tensor reduction, or a combination of both. Through various examples we show that GOSAM can produce one-loop amplitudes for both QCD and electroweak theory; model files for theories Beyond the Standard Model can be linked as well.

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Optimising code generation with haggies

Cited by 61 publications

References 34 publications

Compactifying formulas with FORM

Compactifying formulas with FORM

Diphoton + jet at NLO

Automated one-loop calculations with Golem/Samurai

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