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suggested changes for 1st pull request implemented

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This commit is contained in:
Felix Erben
2019-10-08 13:19:47 +01:00
parent e280ec6b0b
commit 2ce7f2b4d8
3 changed files with 39 additions and 29 deletions
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44
Grid/qcd/utils/BaryonUtils.h
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@ -31,8 +31,6 @@
NAMESPACE_BEGIN(Grid);
#undef DELTA_F_EQ_2
template <typename FImpl>
class BaryonUtils
{
@ -43,6 +41,9 @@ public:
typedef typename FImpl::SitePropagator pobj;
typedef typename ComplexField::vector_object vobj;
static constexpr int epsilon[6][3] = {{0,1,2},{1,2,0},{2,0,1},{0,2,1},{2,1,0},{1,0,2}};
static constexpr Complex epsilon_sgn[6]= {1,1,1,-1,-1,-1};
private:
template <class mobj, class robj>
@ -52,7 +53,7 @@ public:
const Gamma GammaA,
const Gamma GammaB,
const int parity,
const std::vector<int> &wick_contractions,
const int * wick_contractions,
robj &result);
public:
static void ContractBaryons(const PropagatorField &q1_src,
@ -76,6 +77,11 @@ public:
robj &result);
};
template <class FImpl>
constexpr int BaryonUtils<FImpl>::epsilon[6][3];
template <class FImpl>
constexpr Complex BaryonUtils<FImpl>::epsilon_sgn[6];
template <class FImpl>
template <class mobj, class robj>
void BaryonUtils<FImpl>::baryon_site(const mobj &D1,
@ -84,16 +90,12 @@ void BaryonUtils<FImpl>::baryon_site(const mobj &D1,
const Gamma GammaA,
const Gamma GammaB,
const int parity,
const std::vector<int> &wick_contraction,
const int * wick_contraction,
robj &result)
{
Gamma g4(Gamma::Algebra::GammaT); //needed for parity P_\pm = 0.5*(1 \pm \gamma_4)
static const int epsilon[6][3] = {{0,1,2},{1,2,0},{2,0,1},{0,2,1},{2,1,0},{1,0,2}};
static const Complex epsilon_sgn[6]= {1,1,1,-1,-1,-1};
auto gD1a = GammaA * GammaA * D1;
auto gD1b = GammaA * g4 * GammaA * D1;
auto pD1 = 0.5* (gD1a + (double)parity * gD1b);
@ -176,7 +178,7 @@ void BaryonUtils<FImpl>::ContractBaryons(const PropagatorField &q1_src,
const int parity,
ComplexField &baryon_corr)
{
std::cout << "quarks_snk " << quarks_snk[0] << quarks_snk[1] << quarks_snk[2] << std::endl;
std::cout << "Contraction <" << quarks_snk[0] << quarks_snk[1] << quarks_snk[2] << "|" << quarks_src[0] << quarks_src[1] << quarks_src[2] << ">" << std::endl;
std::cout << "GammaA " << (GammaA.g) << std::endl;
std::cout << "GammaB " << (GammaB.g) << std::endl;
@ -184,17 +186,10 @@ void BaryonUtils<FImpl>::ContractBaryons(const PropagatorField &q1_src,
GridBase *grid = q1_src.Grid();
Gamma g4(Gamma::Algebra::GammaT); //needed for parity P_\pm = 0.5*(1 \pm \gamma_4)
static const int epsilon[6][3] = {{0,1,2},{1,2,0},{2,0,1},{0,2,1},{2,1,0},{1,0,2}};
static const int epsilon_sgn[6]= {1,1,1,-1,-1,-1};
std::vector<int> wick_contraction = {0,0,0,0,0,0};
int wick_contraction[6];
for (int ie=0; ie < 6 ; ie++)
if (quarks_src[0] == quarks_snk[epsilon[ie][0]] && quarks_src[1] == quarks_snk[epsilon[ie][1]] && quarks_src[2] == quarks_snk[epsilon[ie][2]])
wick_contraction[ie]=1;
wick_contraction[ie] = (quarks_src[0] == quarks_snk[epsilon[ie][0]] && quarks_src[1] == quarks_snk[epsilon[ie][1]] && quarks_src[2] == quarks_snk[epsilon[ie][2]]) ? 1 : 0;
// typedef typename ComplexField::vector_object vobj;
auto vbaryon_corr= baryon_corr.View();
auto v1 = q1_src.View();
auto v2 = q2_src.View();
@ -225,18 +220,15 @@ void BaryonUtils<FImpl>::ContractBaryons_Sliced(const mobj &D1,
const int parity,
robj &result)
{
std::cout << "Contraction <" << quarks_snk[0] << quarks_snk[1] << quarks_snk[2] << "|" << quarks_src[0] << quarks_src[1] << quarks_src[2] << ">" << std::endl;
std::cout << "GammaA " << (GammaA.g) << std::endl;
std::cout << "GammaB " << (GammaB.g) << std::endl;
assert(parity==1 || parity == -1 && "Parity must be +1 or -1");
Gamma g4(Gamma::Algebra::GammaT); //needed for parity P_\pm = 0.5*(1 \pm \gamma_4)
static const int epsilon[6][3] = {{0,1,2},{1,2,0},{2,0,1},{0,2,1},{2,1,0},{1,0,2}};
static const int epsilon_sgn[6]= {1,1,1,-1,-1,-1};
std::vector<int> wick_contraction = {0,0,0,0,0,0};
int wick_contraction[6];
for (int ie=0; ie < 6 ; ie++)
if (quarks_src[0] == quarks_snk[epsilon[ie][0]] && quarks_src[1] == quarks_snk[epsilon[ie][1]] && quarks_src[2] == quarks_snk[epsilon[ie][2]])
wick_contraction[ie]=1;
wick_contraction[ie] = (quarks_src[0] == quarks_snk[epsilon[ie][0]] && quarks_src[1] == quarks_snk[epsilon[ie][1]] && quarks_src[2] == quarks_snk[epsilon[ie][2]]) ? 1 : 0;
result=Zero();
baryon_site(D1,D2,D3,GammaA,GammaB,parity,wick_contraction,result);