Get From QCD Flux Tubes to Gravitational S-matrix and Back PDF

By Victor Gorbenko

ISBN-10: 3319446029

ISBN-13: 9783319446028

This thesis reports a number of facets of non-critical strings either to illustrate of a non-trivial and solvable version of quantum gravity and as a constant approximation to the confining flux tube in quantum chromodynamics (QCD). It proposes and develops a brand new method for calculating the finite quantity spectrum of confining flux tubes. this method is predicated on approximate integrability and it performed a game-changing position within the examine of confining strings. formerly, a theoretical interpretation of obtainable top of the range lattice facts was once most unlikely, as the traditional perturbative expansion for calculating the string spectra used to be badly asymptotically diverging within the regime available at the lattice. With the hot procedure, power degrees may be calculated for a lot shorter flux tubes than used to be formerly attainable, taking into account a quantitative comparability with present lattice facts. the enhanced theoretical keep an eye on makes it take place that latest lattice facts presents powerful proof for a brand new pseudoscalar particle localized at the QCD fluxtube - the worldsheet axion. the recent strategy paves a singular and promising course in the direction of figuring out the dynamics of quark confinement.

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