Scaling, light-cone expansion, and the Van Hove model

With certain assumptions on the coupling of two currents to particles of increasing spin, it is shown that the Van Hove model results in Bjorken scaling and Regge asymptotic behavior. The fields corresponding to these particles are related to the products appearing in the operator-product expansion near the light cone. © 1971 The American Physical Society

Recent high-energy multiplicity distributions in the context of the Feynman fluid analogy

Recent accelerator data on multiplicity distributions are reexamined within the context of the Feynman fluid analogy. An interpretation of the data put forward is that the diffractive component decreases logarithmically with energy. © 1973 The American Physical Society

Peccei-Quinn mechanism and dimension-six CP-violating operators.

It is shown that the Peccei-Quinn mechanism will, in the large-N limit, remove dimension-six CP-violating operators constructed solely out of gauge fields. Such operators have been recently proposed as a source of a possibly large neutron electric dipole moment. © 1991 The American Physical Society

Corrections to the Thomas-Fermi model of the atom

A WKB approximation to the Hartree equations for an atom, taking the 1 r singularity of the potential into account, is developed. This in turn allows us to obtain in a systematic way the Z -1 3 and Z -2 3 corrections to the Thomas-Fermi model of the atom. Such a procedure is used to obtain a finite change density at the nucleus, which agrees well with Hartree-Fock values. © 1982

Multiple vacua for non-abelian lattice gauge theories

The various formulations of gauge theories characterized by the parameter θ are constructed for the lattice version of these theories. We do not rely on the existence of topologically stable solutions of the classical equations. These constructions are based on the existence of inequivalent representations of the canonical commutation relations. © 1979

Current-algebra sum rules for states of arbitrary mass and spin

Sum rules based on current algebra are obtained for the currents evaluated between states of arbitrary spin and mass. Both the infinite-momentum limit and the dispersion method are shown to yield the same result. These sum rules are given explicitly for the crossed-channel amplitudes. © 1967 The American Physical Society

Fractional quantum Hall effect in nonuniform magnetic fields.

Investigations of the fractional quantum Hall effect are extended to spatially varying magnetic fields. Approximate single-particle wave functions are proposed and compared with ones obtained by numerical integration. As in the uniform field case, the interacting many-electron system forms an incompressible fluid and has fractionally charged excitations. Field inhomogeneities can trap collective excitations. © 1990 The American Physical Society

Photoproduction of intermediate vector bosons

A peripheral collision calculation of the process γ + p → W + ..., where W is an intermediate vector boson, is performed. Results and possible detection schemes are discussed. © 1963

Equivalence of lattice gauge and spin theories

It is shown that a lattice gauge theory based on the group G is equivalent to a lattice spin theory invariant under a global group which is an infinite direct product of G's. A method of inducing a lattice gauge theory is presented. © 1983

Multiparticle production-Feynman fluid analogy

The analogy between high-energy events with many particles in the final state and a distribution of particles in a fluid is examined in detail. It is shown that many theoretical models lend themselves to such an interpretation. Using experimental data on prong cross sections and one-particle inclusive distributions, some properties of this analogous fluid are computed. The possibility and significance of a "phase transition" are discussed and predictions based on such considerations are made for higher energies. © 1972 The American Physical Society