An Introduction to Quantum Field Theory

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Lorentz violation at high energy: Concepts, phenomena, and astrophysical constraints (2005, methodology): “If we label the incoming particle momentum and helicity/polarization by p, s and the final particles by p, s,p, s then the rate for fixed helicities is given by [108]”
Issues on tadpoles and vacuum redefinitions in String Theory (2004, unknown): “Let us refer for definiteness to a scalar field theory, for which e i ~ W [J ] = ∫ [Dφ] e i ~ (S(φ)+ ∫ dDx Jφ) , (2.1) where S(φ) = ∫ dDx ( − 1 2 ∂µφ ∂ µφ− V (φ) ) , (2.2) written here symbolically for a collection of scalar fields φ in D dimensions.”
Relativistic Brownian Motion (2008, background): “As a standard paradigm for Brownian motion, we consider the one-dimensional motion of a point-like Brownian particle (mass M), which is surrounded by a stationary homogeneous heat bath consisting, e.g., of smaller liquid particles (mass m ≪ M) at constant temperature T.”
Modern Tests of Lorentz Invariance (2005, background): “For another discussion of Lorentz symmetry in field theory see [172].”