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Abstract We show that the vacuum for a scalar field in de Sitter space is not unique, but rather forms a one-parameter family. We examine the response of a particle detector in the general vacuum.
The effects of spin-32 excited quarks are considered as probes of a possible new hadronic mass-scale Λ. A specific model is developed which describes virtual spin-32 quarks of mass of O(Λ). Induced… (More)
Abstract We consider homogeneous field transitions in a background de Sitter space by reducing the field theory to an equivalent quantum-mechanics problem. These transitions prevent spontaneous… (More)
Abstract We examine the consequences of a restrictive current conservation condition, which figures in the bosonization of certain free fermion theories, when applied to a general bosonic nonlinear… (More)
Abstract We present the general form for deep-inelastic cross sections obtained from all SU(3) × SU(2) × U(1) invariant operators of dimension six or less. The operators of dimension six generate… (More)