Title Perturbative and Non-perturbative Approaches to String Sigma-Models in AdS/CFT Author(s) Vescovi, Edoardo Publication Cham, Springer International Publishing, 2017. Description XIII, 239 p. 32 illus., 18 illus. in color : online resource Abstract Note This thesis introduces readers to the type II superstring theories in the AdS5??S5 and AdS4??CP3 backgrounds. Each chapter exemplifies a different computational approach to measuring observables (conformal dimensions of single-trace operators and expectation values of Wilson loop operators) relevant for two supersymmetric theories: the N=4 super Yang-Mills theory and the N=6 Chern-Simons-matter (ABJM) theory.?? Perturbative techniques have traditionally been used to make quantitative predictions in quantum field theories, but they are only reliable as long as the interaction strengths are weak. The anti-de Sitter/conformal field theory (AdS/CFT) correspondence realizes physicists??? dream of studying strongly coupled quantum field theories with ???enhanced??? symmetries, using the methods provided by string theory.?? The first part of the thesis sets up the semiclassical quantization of worldsheet sigma-model actions around string solutions of least area in AdS space. This machinery is used to capture quantum corrections at large coupling to next-to-leading and next-to-next-to-leading order by solving the determinants of partial differential operators and by computing Feynman diagrams, respectively. In turn, the second part presents an innovative approach based on Monte Carlo simulations to finite coupling for a lattice-discretized model of the AdS5??S5 superstring action.?? The thesis focuses on fundamental aspects, as well as on applications previously published by the author, and offers a valuable reference work for anyone interested in the most recent developments in this field ISBN,Price 9783319634203 Keyword(s) 1. EBOOK 2. EBOOK - SPRINGER 3. Elementary particles (Physics) 4. Elementary Particles, Quantum Field Theory 5. Quantum Field Theories, String Theory 6. QUANTUM FIELD THEORY 7. STRING THEORY 8. Strongly Correlated Systems, Superconductivity 9. SUPERCONDUCTIVITY 10. SUPERCONDUCTORS Item Type eBook Multi-Media Links Please Click here for eBook Circulation Data Accession#   Call# Status Issued To Return Due On Physical Location I09955     On Shelf