{ "id": "1701.01508", "version": "v1", "published": "2017-01-05T23:54:17.000Z", "updated": "2017-01-05T23:54:17.000Z", "title": "On Neumann boundary conditions with null external quasi-momenta in finite size", "authors": [ "Messias V. S. Santos", "José B. da Silva Jr.", "Marcelo M. Leite" ], "comment": "28 pages, 11 figures", "categories": [ "cond-mat.stat-mech", "hep-th", "math-ph", "math.MP" ], "abstract": "The order parameter of a critical system defined in a layered parallel plate geometry subject to Neumann boundary conditions at the limiting surfaces is studied. We utilize a one-particle irreducible vertex parts framework in order to study the critical behavior of such a system. The renormalized vertex parts are defined at zero external quasi-momenta, which makes the analysis particularly simple. The distance between the boundary plates $L$ characterizing the finite size system direction perpendicular to the hyperplanes plays a similar role here in comparison with our recent unified treatment for Neumann and Dirichlet boundary conditions. Critical exponents are computed using diagrammatic expansion at least up to two-loop order and are shown to be identical to those from the bulk theory (limit $L \\rightarrow \\infty$).", "revisions": [ { "version": "v1", "updated": "2017-01-05T23:54:17.000Z" } ], "analyses": { "keywords": [ "neumann boundary conditions", "null external quasi-momenta", "finite size", "parallel plate geometry subject", "size system direction perpendicular" ], "note": { "typesetting": "TeX", "pages": 28, "language": "en", "license": "arXiv", "status": "editable" } } }