… Steven Weinberg … accounts, it was Hubble' s discovery of the expansion of the
universe that led Einstein to retract his proposal of a cosmological constant. The real storyis …

The condition that p, have zero vacuum expec-tation value to allorders of perturbation theory
tells us that A.'—= M,'/2h, and therefore the field p, has mass M, while p, and p have mass …

Our job in physics is to see things simply, to understand a great many complicated phenomena
in a unified way, in terms of a few simple principles. At times, our efforts are illuminated …

This paper presents a general framework for introducing nonlinear corrections into ordinary
quantum mechanics, that can serve as a guide to experiments that would be sensitive to …

Weinberg's 1972 work, in his description, had two purposes. The first was practical to bring
together and assess the wealth of data provided over the previous decade while realizing …

Page 1 In The Quantum Theory of Fields Nobel Laureate Steven Weinberg combines his
exceptional physical insight with his gift for clear exposition to provide a self-contained, …

Some proofs are presented of Goldstone's conjecture, that if there is continuous symmetry
transformation under which the Lagrangian is invariant, then either the vacuum state is also …

The S matrix for photon and graviton processes is studied in perturbation theory, under the
restriction that the only creation and annihilation operators for massless particles of spin j …

A new set of renormalization-group equations is presented. These equations are based on
a renormalization procedure in which counterterms are calculated for zero unrenormalized …

Even among households with similar socioeconomic characteristics, saving and wealth vary
considerably. Life-cycle models attribute this variation to differences in time preference rates…