793 research outputs found

    Dimensional continuation without perturbation theory

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    A formula is proposed for continuing physical correlation functions to non-integer numbers of dimensions, expressing them as infinite weighted sums over the same correlation functions in arbitrary integer dimensions. The formula is motivated by studying the strong coupling expansion, but the end result makes no reference to any perturbation theory. It is shown that the formula leads to the correct dimension dependence in weak coupling perturbation theory at one loop.Comment: 6 pages, plain Te

    Free energy decreases along Wilson renormalization group trajectories

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    The free energy is shown to decrease along Wilson renormalization group trajectories, in a dimension-independent fashion, for d>2.d>2. The argument assumes the monotonicity of the cutoff function, and positivity of a spectral representation of the two point function. The argument is valid to all orders in perturbation theory.Comment: 7 pages, Te

    Functional statistical inference of parton distributions

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    Bialek, Callan and Strong have recently given a solution of the problem of determining a continuous probability distribution from a finite set of experimental measurements by formulating it as a one-dimensional quantum field theory. This report applies an extension of their formalism to the inference of functional parton distributions from scattering data.Comment: Department of Physics, Princeton University, Princeton, New Jersey 0854

    Schwinger-Dyson = Wheeler-DeWitt: gauge theory observables as bulk operators

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    We argue that the second-order gauge-invariant Schwinger-Dyson operator of a gauge theory is the Wheeler-DeWitt operator in the dual string theory. Using this identification, we construct a set of operators in the gauge theory that correspond to excitations of gravity in the bulk. We show that these gauge theory operators have the expected properties for describing the semiclassical local gravity theory.Comment: 17 pages, LaTeX; typo corrected, reference adde
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