Stars as Laboratories for Fundamental Physics - MPP Theory Group

Symbols 645
dp differential in phase space, dp = d 3 p/(2π) 3
e electron, electric charge of electron, photon polarization fourvector
e j charge of particle j
E electric field, energy of a particle
E F Fermi energy
f occupation numbers, dimensionless function, energy scale
f PQ Peccei-Quinn scale
f a axion decay constant
f π pion decay constant (93 MeV)
f p occupation number of mode p
F electromagnetic field-strength tensor, number flux of particles,
dimensionless function of order unity
F ω specific energy flux in a radiation field
F fluence (time-integrated flux)
g dimensionless Yukawa coupling, gluon, graviton, number of spin
degrees of freedom
g aγ axion-photon coupling strength (units GeV −1 )
g 10 g aγ /10 −10 GeV −1
G color field-strength tensor, matrix of coupling constants, dimensionless
function
G N Newton’s constant (G N = m −2
Pl )
G F Fermi’s constant (G F = 1.166×10 −5 GeV −2 )
H Hubble expansion parameter
H 0 Hubble expansion parameter today (h × 100 km s −1 Mpc −1 )
H Hamiltonian density
k momentum of a particle, momentum transfer in a reaction
k B Boltzmann’s constant (k B = 1 in natural units)
k D Debye screening scale of the electrons
k i Debye screening scale of the ions
k S screening scale
k TF Thomas-Fermi screening scale
l momentum transfer in a reaction
l mean free path, flavor index
L luminosity of a star
L ⊙ solar luminosity (3.85×10 33 erg)
L Lagrangian density
m mass
m a axion mass
m e electron mass (0.511 MeV)
pion mass (135 MeV)
m π