List of symbols

$ca$	Adiabatic sound speed	p. 83
$DA (z)$	Angular diameter distance	p. 191
$/∂$	Angular spin raising operator	p. 177
$Πij$	Anisotropic stress perturbation tensor	p. 52
$σ$	Uncertainty
$Bo$	Bayes factor	p. 570
$b$	Bias (ratio of galaxy to total matter perturbations)	p. 193
$B Φ(k1,k2,k3)$	Bispectrum of the Bardeen’s potential	p. 544
$g(X )$	Born–Infeld kinetic term	p. 409
$b$	Bulleticity	p. 363
$ζ$	Comoving curvature perturbation	p. 439
$r(z)$	Comoving distance
$ℋ$	Conformal Hubble parameter, $ℋ = aH$	p. 46
$η,τ$	Conformal time	p. 46
$κ$	Convergence	p. 176
$t$	Cosmic time	p. 78
$Λ$	Cosmological constant
$Θ$	Cosmological parameters	p. 562
$rc$	Cross over scale	p. 99
$□$	d’Alembertian, $□ = ∇2$
$F$	Derivative of $f (R )$	p. 90
$𝜃$	Divergence of velocity field	p. 54
$μ$	Direction cosine	p. 448
$π$	Effective anisotropic stress	p. 88
$η(a,k )$	Effective anisotropic stress parameterization	p. 58
$ρ$	Energy density
$Tμν$	Energy momentum tensor	p. 52
$w$	Equation of state	p. 47
$F αβ$	Fisher information matrix	p. 567
$σ8$	Fluctuation amplitude at 8 km/s/Mpc
$uμ$	Four-velocity	p. 52
$Ωm$	Fractional matter density
$fsky$	Fraction of sky observed	p. 267
$ΔM$	Gauge invariant comoving density contrast	p. 56
$τ(z)$	Generic opacity parameter	p. 494
$ϖ$	Gravitational slip parameter	p. 61
$G (a)$	Growth function/Growth factor	p. 62
$γ$	Growth index/Shear	p. 63 /p. 176
$fg$	Growth rate	p. 57
$beff$	Halo effective linear bias factor	p. 386
$h$	Hubble constant in units of 100 km/s/Mpc
$H (z)$	Hubble parameter
$ξi$	Killing field	p. 505
$δ ij$	Kronecker delta
$f(R )$	Lagrangian in modified gravity	p. 89
$P (μ) l$	Legendre polynomials	p. 196
$ℒ (Θ )$	Likelihood function	p. 562
$β(z )$	Linear redshift-space distortion parameter	p. 193
$D (z) L$	Luminosity distance	p. 493
$Q (a,k)$	Mass screening effect	p. 58
$δ m$	Matter density perturbation
$gμν$	Metric tensor	p. 53
$μ$	Modified gravity function: $μ = Q∕η$	p. 60
$C ℓ$	Multipole power spectrum	p. 447
$G$	Newton’s gravitational constant
$N$	Number of e-folds, $N = ln a$	p. 443
$P (k)$	Matter power spectrum
$p$	Pressure
$δp$	Pressure perturbation
$χ (z )$	Radial, dimensionless comoving distance	p. 190
$z$	Redshift
$R$	Ricci scalar
$ϕ$	Scalar field	p. 75
$A$	Scalar potential	p. 52
$Ψ, Φ$	Scalar potentials	p. 53
$ns$	Scalar spectral index	p. 440
$a$	Scale factor
$fa$	Scale of Peccei–Quinn symmetry breaking	p. 417
$ℓ$	Spherical harmonic multipoles
$cs$	Sound speed	p. 286
$Σ$	Total neutrino mass/Inverse covariance matrix/PPN parameter	p. 371/p. 562/p. 61
$Hij T$	Trace-free distortion	p. 52
$T (k)$	Transfer function	p. 468
$Bi$	Vector shift	p. 52
$k$	Wavenumber