Nonlinear boundary dynamics and chiral symmetry in holographic QCD
Author(s)Wilcox, Ronald James; Albrecht, Dylan; Erlich, Joshua
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In a hard-wall model of holographic QCD, we find that nonlinear boundary dynamics are required in order to maintain the correct pattern of explicit and spontaneous chiral symmetry breaking beyond leading order in the pion fields. With the help of a field redefinition, we relate the requisite nonlinear boundary conditions to a standard Sturm-Liouville system. Observables insensitive to the chiral limit receive only small corrections in the improved description, and classical calculations in the hard-wall model remain surprisingly accurate.
DepartmentMassachusetts Institute of Technology. Department of Mechanical Engineering
Physical Review D
American Physical Society
Albrecht, Dylan, Joshua Erlich, and Ronald Wilcox. “Nonlinear Boundary Dynamics and Chiral Symmetry in Holographic QCD.” Physical Review D 85.11 (2012): 114012. © 2012 American Physical Society.
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