constants.hpp

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// Copyright 2015-2018 The ALMA Project Developers
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.

#pragma once


#include <cmath>
#include <complex>

namespace alma {
namespace constants {
constexpr double amu = 1.660538921e-27;
constexpr double e = 1.602176565e-19;
constexpr double a0 = 0.52917721092e-10;
constexpr double NA = 6.02214129e23;
constexpr double kB = 1.3806488e-23;
constexpr double epsilon0 = 8.854187817e-12;
constexpr double me = 9.10938291e-31;
constexpr double mu0 = 12.566370614e-7;
constexpr double h = 6.62606957e-34;
constexpr double hbar = 1.054571726e-34;
constexpr double c = 299792458.;
constexpr double pi = 3.1415926535897932384626433832795028841953;
constexpr char alphabet[] = "abcdefghijklmnopqrstuwxyz";
constexpr double nsigma = 2.828427124746190097603377448419396157138;
constexpr std::complex<double> imud(0.0, 1.0);
} // namespace constants
} // namespace alma