{ "cells": [ { "cell_type": "markdown", "id": "dd3c9519", "metadata": {}, "source": [ "# 1 to 1 process" ] }, { "cell_type": "code", "execution_count": 1, "id": "b35a693f", "metadata": {}, "outputs": [], "source": [ "from smpl_io import io" ] }, { "cell_type": "code", "execution_count": 2, "id": "8fdd58fc", "metadata": {}, "outputs": [], "source": [ "from feynml.interface.qgraf import style\n", "import itertools as it\n", "import re" ] }, { "cell_type": "code", "execution_count": 3, "id": "1c37732f", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "\n", "\tPlease cite the following papers if you use this code:\n", "\n", " [1] Automatic Feynman graph generation J. Comput. Phys. 105 (1993) 279--289 https://doi.org/10.1006/jcph.1993.1074\n", "\n", " [2] Abusing Qgraf Nucl. Instrum. Methods Phys. Res. A 559 (2006) 220--223 https://doi.org/10.1016/j.nima.2005.11.151\n", "\n", " [3] Feynman graph generation and propagator mixing, I Comput. Phys. Commun. 269 (2021) 108103 https://doi.org/10.1016/j.cpc.2021.108103\n", "\n", "\t\n" ] } ], "source": [ "from pyqgraf import qgraf, model\n", "qgraf.install(\"3.6.5\")\n", "xml_string = qgraf.run(\"nu_e[p1]\", \"nu_e[p1]\",loops=2,loop_momentum=\"l\",model = model.gws_UnitaryGauge_reduced, style=style)" ] }, { "cell_type": "code", "execution_count": 31, "id": "23fe988d", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "single photon diags 2\n" ] }, { "data": { "image/png": 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"text/plain": [ "" ] }, "metadata": {}, "output_type": "display_data" } ], "source": [ "from xsdata.formats.dataclass.parsers import XmlParser\n", "from pyfeyn2.render.latex.feynmp import FeynmpRender\n", "from pyfeyn2.render.latex.tikzfeynman import TikzFeynmanRender\n", "from pyfeyn2.render.pyx.pyxrender import PyxRender\n", "from pyfeyn2.feynmandiagram import FeynML\n", "\n", "from pyfeyn2.auto.bend import auto_bend\n", "from pyfeyn2.auto.label import auto_label\n", "from pyfeyn2.auto.position import feynman_adjust_points,auto_vdw\n", "\n", "parser = XmlParser()\n", "fml = parser.from_string(xml_string, FeynML)\n", "\n", "def filter_diag(d):\n", " count = 0\n", " ecount = 0\n", " for p in d.propagators:\n", " if p.pdgid == 22:\n", " count +=1\n", " if p.pdgid == 11:\n", " ecount +=1\n", " if count ==1 and ecount >=2:\n", " return True\n", " return False\n", "\n", "ccount=0 \n", "for d in fml.diagrams:\n", " if filter_diag(d):\n", " ccount +=1\n", "print(\"single photon diags\", ccount)\n", "\n", "for d in fml.diagrams:\n", " if filter_diag(d):\n", " d.legs[0].with_xy(-2,0)\n", " d.legs[1].with_xy(2,0)\n", " d.get_point(d.legs[0].target).with_xy(-1,0)\n", " d.get_point(d.legs[1].target).with_xy(1,0)\n", " d = feynman_adjust_points(d,size=15,clear_vertices=False)\n", " auto_bend(d)\n", " auto_label(d.propagators)\n", " auto_label(d.legs)\n", " #print(d)\n", " t = TikzFeynmanRender(d)\n", " #print(t.get_src())\n", " t.render(show=True)\n", " #break" ] }, { "cell_type": "code", "execution_count": 6, "id": "ab4399ea", "metadata": {}, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "\n", "\n", " \n", " \n", "\n", "\n", " \n", " \n", "\n", " \n", " \n", "\n", " \n", " \n", "\n", "\n", "\n", " \n", " nu_e\n", " incoming\n", " Vert1\n", " \n", " p1\n", " \n", " \n", "\n", "\n", "\n", " \n", " nu_e\n", " outgoing\n", " Vert2\n", " \n", " p1\n", " \n", " \n", "\n", "\n", "\n", " \n", " e_minus\n", " Vert1\n", " Vert2\n", " \n", " l1\n", " \n", " \n", "\n", " \n", " W_minus\n", " Vert3\n", " Vert1\n", " \n", " l1-p1\n", " \n", " \n", "\n", " \n", " W_minus\n", " Vert2\n", " Vert3\n", " \n", " l1-p1\n", " \n", " \n", "\n", " \n", " gamma\n", " Vert3\n", " Vert3\n", " \n", " l2\n", " \n", " \n", "\n", "\n", " \n", " \n", " \n", "\n", "\n", " \n", " \n", "\n", " \n", " \n", "\n", " \n", " \n", "\n", " \n", " \n", "\n", "\n", "\n", " \n", " nu_e\n", " incoming\n", " Vert1\n", " \n", " p1\n", " \n", " \n", "\n", "\n", "\n", " \n", " nu_e\n", " outgoing\n", " Vert2\n", " \n", " p1\n", " \n", " \n", "\n", "\n", "\n", " \n", " e_minus\n", " Vert1\n", " Vert3\n", " \n", " l1\n", " \n", " \n", "\n", " \n", " W_minus\n", " Vert4\n", " Vert1\n", " \n", " l1-p1\n", " \n", " \n", "\n", " \n", " e_minus\n", " Vert3\n", " Vert2\n", " \n", " -l2\n", " \n", " \n", "\n", " \n", " W_minus\n", " Vert2\n", " Vert4\n", " \n", " -l2-p1\n", " \n", " \n", "\n", " \n", " gamma\n", " Vert4\n", " Vert3\n", " \n", " -l1-l2\n", " \n", " \n", "\n", "\n", " \n", " 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