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added parity operator to baryon fields

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ferben
2019-02-08 15:49:52 +00:00
parent d26a5dce12
commit c4d27ee30f
2 changed files with 34 additions and 6 deletions
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12
Hadrons/Modules/MDistil/BContraction.hpp
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@ -26,6 +26,7 @@ public:
std::string, two,
std::string, three,
std::string, output,
int, parity,
std::vector<std::string>, mom);
};
@ -104,6 +105,8 @@ void TBContraction<FImpl>::execute(void)
int N_2 = two.size();
int N_3 = three.size();
int parity = par().parity;
LOG(Message) << "Computing distillation baryon fields" << std::endl;
LOG(Message) << "One: '" << par().one << "' Two: '" << par().two << "' Three: '" << par().three << "'" << std::endl;
LOG(Message) << "Momenta:" << std::endl;
@ -138,9 +141,13 @@ void TBContraction<FImpl>::execute(void)
SpinVector tmp222;
SpinVector tmp111;
assert(parity == 1 || parity == -1);
std::vector<std::vector<int>> epsilon = {{0,1,2},{1,2,0},{2,0,1},{0,2,1},{2,1,0},{1,0,2}};
std::vector<int> epsilon_sgn = {1,1,1,-1,-1,-1};
Gamma g4(Gamma::Algebra::GammaT);
gamma12_ = {
Gamma::Algebra::Identity, // I
Gamma::Algebra::Gamma5, // gamma_5
@ -227,8 +234,11 @@ void TBContraction<FImpl>::execute(void)
tmp33s()(is)() = tmp33[sU]()(is)(epsilon[ie][2]);
}
tmp333 = Gamma(gamma23_[0])*tmp33s;
tmp111 = Gamma(gamma12_[0])*tmp11s;
tmp222 = g4*tmp111;
tmp111 = 0.5*(double)parity*(tmp111 + tmp222); // P_\pm * ...
diquark2 = factor23[0]*innerProduct(tmp22s,tmp333);
BField2[Bindex]+=(double)epsilon_sgn[ie]*tmp11s*diquark2;
BField2[Bindex]+=(double)epsilon_sgn[ie]*tmp111*diquark2;
}
}
}