wiggle parameterization
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@ -269,6 +269,19 @@ double CosmoPower::matterTransferFunctionHu(double k)
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return T_k;
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}
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double CosmoPower::noWiggleTk(double k)
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{
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double s = 44.5 * log(9.83 / OmegaEff) / (sqrt(1 + 10 * pow(OMEGA_B * h * h, 0.75)));
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double alpha_Gamma = 1 - 0.328 * log(431 * OmegaEff) * OMEGA_B / OMEGA_0 + 0.38 * log(22.3 * OmegaEff) * pow(OMEGA_B / OMEGA_0, 2);
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double GammaEff = OMEGA_0 * h * (alpha_Gamma + (1 - alpha_Gamma)/(1 + pow(0.43 * k * s, 4)));
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double q = k/(h*GammaEff) * pow(Theta_27, 2);
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double L_0 = log(2 * M_E + 1.8 * q);
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double C_0 = 14.2 + 731 / (1 + 62.5 * q);
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double T0 = L_0 / (L_0 + C_0 * q * q);
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return T0;
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}
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double CosmoPower::powerHuBaryons(double k)
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{
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double s = 44.5 * log(9.83 / OmegaEff) / (sqrt(1 + 10 * pow(OMEGA_B * h * h, 0.75)));
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@ -473,6 +486,9 @@ void CosmoPower::setFunction(CosmoFunction f)
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case POWER_TEST:
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eval = &CosmoPower::powerTest;
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break;
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case NOWIGGLE_TK:
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eval = &CosmoPower::noWiggleTk;
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break;
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default:
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abort();
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}
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@ -90,7 +90,8 @@ namespace CosmoTool {
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POWER_BDM,
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POWER_TEST,
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HU_WIGGLES_ORIGINAL,
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SAMPLE_WIGGLES
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SAMPLE_WIGGLES,
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NOWIGGLE_TK
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};
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CosmoPower();
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@ -124,6 +125,7 @@ namespace CosmoTool {
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double powerTest(double k);
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double powerHuWigglesOriginal(double k);
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double sample_BAO(double k);
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double noWiggleTk(double k);
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};
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};
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@ -58,6 +58,7 @@ using namespace std;
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#define POWER_TEST 8
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#define POWER_SPECTRUM POWER_EFSTATHIOU
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#define SAMPLE_WIGGLES 9
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namespace Cosmology {
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@ -206,6 +207,31 @@ double powG(double y)
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*/
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double powerSpectrum(double k, double normPower)
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{
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#if POWER_SPECTRUM == SAMPLE_WIGGLES
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// BAO wiggle parameterization for reconstruction
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// Babic et al. 2022, https://arxiv.org/abs/2203.06177
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// No-wiggle transfer function
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double s = 44.5 * log(9.83 / OmegaEff) / (sqrt(1 + 10 * pow(OMEGA_B * h * h, 0.75)));
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double alpha_Gamma = 1 - 0.328 * log(431 * OmegaEff) * OMEGA_B / OMEGA_0 + 0.38 * log(22.3 * OmegaEff) * pow(OMEGA_B / OMEGA_0, 2);
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double GammaEff = OMEGA_0 * h * (alpha_Gamma + (1 - alpha_Gamma)/(1 + pow(0.43 * k * s, 4)));
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double q = k/(h*GammaEff) * pow(Theta_27, 2);
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double L_0 = log(2 * M_E + 1.8 * q);
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double C_0 = 14.2 + 731 / (1 + 62.5 * q);
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double T0 = L_0 / (L_0 + C_0 * q * q);
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// Wiggle parameterization
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double A = 0;
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double r_s = 10;
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double k_D = 2 * M_PI / 100;
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double param = 1 + A * sin(k * r_s) * exp(- k / k_D);
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return normPower * pow(k, n) * T0 * T0 * param;
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#endif
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#if POWER_SPECTRUM == POWER_EFSTATHIOU
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double a = 6.4/Gamma0;
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double b = 3/Gamma0;
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