Gauge symmetry and Slavnov-Taylor identities for randomly stirred fluids.
نویسندگان
چکیده
The path integral for randomly forced incompressible fluids is shown to have an underlying Becchi-Rouet-Stora (BRS) symmetry as a consequence of Galilean invariance. This symmetry must be respected to have a consistent generating functional, free from both an overall infinite factor and spurious relations amongst correlation functions. We present a procedure for respecting this BRS symmetry, akin to gauge fixing in quantum field theory. Relations are derived between correlation functions of this gauge-fixed, BRS symmetric theory, analogous to the Slavnov-Taylor identities of quantum field theory.
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عنوان ژورنال:
- Physical review letters
دوره 99 25 شماره
صفحات -
تاریخ انتشار 2007