793 research outputs found
Dimensional continuation without perturbation theory
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
The free energy is shown to decrease along Wilson renormalization group
trajectories, in a dimension-independent fashion, for 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
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
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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