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A Simple Solution to the Strong CP Problem with a Harmless Axion
We describe a simple generalization of the Peccei-Quinn mechanism which eliminates the strong CP problem at the cost of a very light, very weakly coupled axion. The mechanism requires no new fermionsExpand
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The approach to thermal equilibrium in quantized chaotic systems
We consider many-body quantum systems that exhibit quantum chaos, in the sense that the observables of interest act on energy eigenstates like banded random matrices. We study the time-dependentExpand
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Supersymmetric relics from the big bang
Abstract We consider the cosmological constraints on supersymmetric theories with a new, stable particle. Circumstantial evidence points to a neutral gauge/Higgs fermion as the best candidate forExpand
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Calculations of relic densities in the early universe
The cosmological relic densities of stable particles are calculated to high precision. The results depend on assumptions made about the quark-hadron phase transition. We discuss in detail theExpand
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Thermal fluctuations in quantized chaotic systems
We consider a quantum system with N degrees of freedom which is classically chaotic. When N is large, and both and the quantum energy uncertainty are small, quantum chaos theory can be used toExpand
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Review of Particle Physics: Particle data group
This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2658 new measurements from 644 papers, we list, evaluate, and average measured properties of gaugeExpand
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Search for violations of quantum mechanics
The treatment of quantum effects in gravitational fields indicates that pure states may evolve into mixed states, and Hawking has proposed modifications of the axioms of field theory whichExpand
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Axion Couplings to Matter. 1. CP Conserving Parts
The CP-conserving couplings of axions to photons, electrons, and nucleons are derived for an arbitrary axion model. The relevance of the results to proposed axion search experiments is brieflyExpand
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