Abstract
First is the understanding of gauge fields. The next is the Lagrangian and the path integral approach to local gauge invariance. The introduction of covariant derivative into local gauge invariance is given followed by the local gauge invariance treatment in acoustic fields.
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Gan, W.S.: Gauge invariance approach to acoustic fields. In: Akiyama, I. (ed.) Acoustical Imaging, vol. 29, pp. 389–394. Springer, The Netherlands (2007)
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Gan, W.S. (2019). Local Gauge Invariance. In: Gauge Invariance Approach to Acoustic Fields. Springer, Singapore. https://doi.org/10.1007/978-981-13-8751-7_8
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DOI: https://doi.org/10.1007/978-981-13-8751-7_8
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