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18 April 2024 |
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Anomalous massless modes | | Luis Melgar
; | | Date: |
4 Dec 2014 | | Abstract: | Some years ago Anton Yu. Alekseev et al. conjectured the existence of
massless modes in the spectrum of excitations ("anomalous massless modes")
building upon certain similarities between a spontaneous symmetry breaking and
the interplay of axial and vector symmetries in an anomalous theory. We
reinterpret the analogy and argue that the presence of these modes is ensured
in any (even) number of dimensions only by the excitation of certain
anomaly-induced terms called Schwinger terms. In 1+1 dimensions the anomalous
massless mode corresponds to the charge density wave present in a Luttinger
liquid. In 3+1 dimensions, we identify the anomalous massless mode with the
so-called chiral magnetic wave. Our analysis shows that both modes arise as a
consequence of the same physics. | | Source: | arXiv, 1412.1771 | | Services: | Forum | Review | PDF | Favorites | |
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