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Wilson-line scalar as a Nambu-Goldstone boson in flux compactifications and higher-loop corrections. (English) Zbl 1435.81279

Summary: We study a scalar zero mode originated from extradimensional components of a gauge field in a six-dimensional theory compactified on a magnetized torus. We confirm it is a Nambu-Goldstone boson of the translational symmetry on the torus which is breaking spontaneously due to magnetic flux. We also show explicitly it is massless up to the two-loop level. Moreover, we discuss full order contributions by considering the effective potential.

MSC:

81V73 Bosonic systems in quantum theory
81T33 Dimensional compactification in quantum field theory
81R40 Symmetry breaking in quantum theory
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