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Stars as Laboratories for Fundamental Physics - MPP Theory Group

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648 Symbols<br />

µ B Bohr magneton (e/2m e )<br />

µ N nuclear magneton (e/2m p )<br />

µ e electron mean molecular weight (µ e ≈ Ye<br />

−1 ), electron chemical<br />

potential<br />

ν neutrino, Lorentz index, dimensionless power index<br />

ξ dimensionless correction factor, dimensionless axion-photon coupling<br />

constant<br />

π π = 3.1415 . . ., pion<br />

ρ m<strong>as</strong>s density, density matrix<br />

ρ density matrix <strong>for</strong> antineutrinos<br />

ρ 0 nuclear density (3×10 14 g cm −3 )<br />

ρ 14 ρ/10 14 g cm −3<br />

ρ 15 ρ/10 15 g cm −3<br />

σ scattering cross section, Pauli matrix, spin operator<br />

τ lifetime of a particle, duration of a stellar evolution ph<strong>as</strong>e, Pauli<br />

matrix, optical depth<br />

Φ Higgs field<br />

Φ 0 vacuum expectation value of Higgs field<br />

χ majoron, majoron field<br />

ψ fermion field<br />

Ψ column vector of fermion fields (several flavors)<br />

ω energy of a particle, energy transfer in reactions<br />

ω P pl<strong>as</strong>ma frequency<br />

ω 0 zero-temperature pl<strong>as</strong>ma frequency<br />

Ω cosmic density parameter, matrix of energies <strong>for</strong> mixed neutrinos

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