FeynmanDiagrams.jl/notebooks/diagram_generation.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "WARNING: Method definition (::Type{QEDcore.ParticleStateful{DIR, SPECIES, ELEMENT} where ELEMENT<:QEDbase.AbstractFourMomentum})(QEDbase.AbstractFourMomentum) where {DIR<:QEDbase.ParticleDirection, SPECIES<:QEDbase.AbstractParticleType} in module QEDcore at /home/antonr/.julia/packages/QEDcore/uVldP/src/phase_spaces/create.jl:7 overwritten in module MetagraphOptimization at /home/antonr/.julia/packages/MetagraphOptimization/0iydf/src/QEDprocesses_patch.jl:15.\n",
      "ERROR: Method overwriting is not permitted during Module precompilation. Use `__precompile__(false)` to opt-out of precompilation.\n",
      "WARNING: Method definition (::Type{QEDcore.ParticleStateful{DIR, SPECIES, ELEMENT} where ELEMENT<:QEDbase.AbstractFourMomentum})(QEDbase.AbstractFourMomentum) where {DIR<:QEDbase.ParticleDirection, SPECIES<:QEDbase.AbstractParticleType} in module QEDcore at /home/antonr/.julia/packages/QEDcore/uVldP/src/phase_spaces/create.jl:7 overwritten in module MetagraphOptimization at /home/antonr/.julia/packages/MetagraphOptimization/0iydf/src/QEDprocesses_patch.jl:15.\n",
      "ERROR: Method overwriting is not permitted during Module precompilation. Use `__precompile__(false)` to opt-out of precompilation.\n"
     ]
    }
   ],
   "source": [
    "using Revise\n",
    "using FeynmanDiagramGenerator"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "6-element Vector{VirtualParticle{QEDProcess{Tuple{Photon, Photon, Electron}, Tuple{Photon, Electron}, Tuple{AllPolarization, AllPolarization, AllSpin}, Tuple{AllPolarization, AllSpin}}, PT, 3, 2} where PT<:AbstractParticleType}:\n",
       " positron: \t000 | 11\n",
       " electron: \t001 | 10\n",
       " positron: \t010 | 01\n",
       " electron: \t011 | 00\n",
       " positron: \t100 | 01\n",
       " electron: \t101 | 00"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "WARNING: both QEDcore and QEDbase export \"mul\"; uses of it in module FeynmanDiagramGenerator must be qualified\n"
     ]
    }
   ],
   "source": [
    "proc = QEDProcess(2, 1, 1, 1, 0, 0)\n",
    "all_particles = Set()\n",
    "for fd in feynman_diagrams(proc)\n",
    "    push!(all_particles, virtual_particles(proc, fd)...)\n",
    "end\n",
    "all_particles = sort([all_particles...])\n",
    "display(all_particles)\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "OrderedCollections.OrderedDict{VirtualParticle, Vector{Tuple{VirtualParticle, VirtualParticle}}} with 6 entries:\n",
       "  positron: \t000 | 11 => [(positron: \t000 | 01, photon: \t000 | 10)]\n",
       "  electron: \t001 | 10 => [(photon: \t000 | 10, electron: \t001 | 00)]\n",
       "  positron: \t010 | 01 => [(positron: \t000 | 01, photon: \t010 | 00)]\n",
       "  electron: \t011 | 00 => [(electron: \t001 | 00, photon: \t010 | 00)]\n",
       "  positron: \t100 | 01 => [(positron: \t000 | 01, photon: \t100 | 00)]\n",
       "  electron: \t101 | 00 => [(electron: \t001 | 00, photon: \t100 | 00)]"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "pairs = sort(FeynmanDiagramGenerator.particle_pairs(all_particles))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "6-element Vector{Tuple{VirtualParticle, VirtualParticle, VirtualParticle}}:\n",
       " (photon: \t000 | 10, electron: \t011 | 00, positron: \t100 | 01)\n",
       " (photon: \t000 | 10, electron: \t101 | 00, positron: \t010 | 01)\n",
       " (photon: \t010 | 00, electron: \t101 | 00, positron: \t000 | 11)\n",
       " (photon: \t010 | 00, electron: \t001 | 10, positron: \t100 | 01)\n",
       " (photon: \t100 | 00, electron: \t011 | 00, positron: \t000 | 11)\n",
       " (photon: \t100 | 00, electron: \t001 | 10, positron: \t010 | 01)"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "triples = FeynmanDiagramGenerator.total_particle_triples(all_particles)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "s: 6, should be: 6\n",
      "number of triples: 6\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "6-element Vector{Tuple{VirtualParticle, VirtualParticle, VirtualParticle}}:\n",
       " (photon: \t000 | 10, electron: \t011 | 00, positron: \t100 | 01)\n",
       " (photon: \t000 | 10, electron: \t101 | 00, positron: \t010 | 01)\n",
       " (photon: \t010 | 00, electron: \t001 | 10, positron: \t100 | 01)\n",
       " (photon: \t010 | 00, electron: \t101 | 00, positron: \t000 | 11)\n",
       " (photon: \t100 | 00, electron: \t001 | 10, positron: \t010 | 01)\n",
       " (photon: \t100 | 00, electron: \t011 | 00, positron: \t000 | 11)"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "function n(vp::VirtualParticle)\n",
    "    if !haskey(pairs, vp)\n",
    "        return 1\n",
    "    end\n",
    "    s = 0\n",
    "    for (l, r) in pairs[vp]\n",
    "        s += n(l) * n(r)\n",
    "    end\n",
    "    return s\n",
    "end\n",
    "\n",
    "s = 0\n",
    "for (ph, e, p) in triples\n",
    "    s += n(ph) * n(e) * n(p)\n",
    "end\n",
    "\n",
    "println(\"s: $s, should be: $(length(feynman_diagrams(proc)))\")\n",
    "println(\"number of triples: $(length(triples))\")\n",
    "\n",
    "sort(triples)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "Graph:\n",
       "  Nodes: Total: 642, FeynmanDiagramGenerator.ComputeTask_PropagatePairs: 24, FeynmanDiagramGenerator.ComputeTask_CollectPairs: 24, \n",
       "         FeynmanDiagramGenerator.ComputeTask_Triple: 192, FeynmanDiagramGenerator.ComputeTask_SpinPolCumulation: 1, MetagraphOptimization.DataTask: 329, \n",
       "         FeynmanDiagramGenerator.ComputeTask_BaseState: 10, FeynmanDiagramGenerator.ComputeTask_Pair: 24, FeynmanDiagramGenerator.ComputeTask_Propagator: 6, \n",
       "         FeynmanDiagramGenerator.ComputeTask_CollectTriples: 32\n",
       "  Edges: 1249\n",
       "  Total Compute Effort: 0.0\n",
       "  Total Data Transfer: 0.0\n",
       "  Total Compute Intensity: 0.0\n"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "graph = generate_DAG(proc)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "mock_machine (generic function with 1 method)"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "using MetagraphOptimization\n",
    "using UUIDs\n",
    "\n",
    "function mock_machine()\n",
    "    return Machine(\n",
    "        [\n",
    "            MetagraphOptimization.NumaNode(\n",
    "                0,\n",
    "                1,\n",
    "                MetagraphOptimization.default_strategy(MetagraphOptimization.NumaNode),\n",
    "                -1.0,\n",
    "                UUIDs.uuid1(),\n",
    "            ),\n",
    "        ],\n",
    "        [-1.0;;],\n",
    "    )\n",
    "end"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "PhaseSpacePoint{QEDProcess{Tuple{Photon, Photon, Electron}, Tuple{Photon, Electron}, Tuple{AllPolarization, AllPolarization, AllSpin}, Tuple{AllPolarization, AllSpin}}, PerturbativeQED, PhasespaceDefinition{SphericalCoordinateSystem, ElectronRestFrame}, Tuple{ParticleStateful{Incoming, Photon, SFourMomentum}, ParticleStateful{Incoming, Photon, SFourMomentum}, ParticleStateful{Incoming, Electron, SFourMomentum}}, Tuple{ParticleStateful{Outgoing, Photon, SFourMomentum}, ParticleStateful{Outgoing, Electron, SFourMomentum}}, SFourMomentum}"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "psp = PhaseSpacePoint(\n",
    "    proc, \n",
    "    PerturbativeQED(), \n",
    "    PhasespaceDefinition(SphericalCoordinateSystem(), ElectronRestFrame()), \n",
    "    tuple((rand(SFourMomentum) for _ in 1:number_incoming_particles(proc))...),\n",
    "    tuple((rand(SFourMomentum) for _ in 1:number_outgoing_particles(proc))...)\n",
    ")\n",
    "typeof(psp)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "ename": "Base.Meta.ParseError",
     "evalue": "Error trying to display an error.",
     "output_type": "error",
     "traceback": [
      "Error trying to display an error."
     ]
    }
   ],
   "source": [
    "func = eval(get_compute_function(graph, proc, mock_machine()))\n",
    "\n",
    "func(psp)"
   ]
  }
 ],
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