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Spontaneous Symmetry Breaking and Nambu-Goldstone Mode in a Non-Equilibrium Dissipative System

    https://doi.org/10.1142/9789814280389_0092Cited by:0 (Source: Crossref)
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    Abstract:

    In a non-equilibrium stationary state with space-time structure a Nambu-Goldstone mode with dissipation arises as a consequence of the spontaneous symmetry breaking. A laser type model is considered as an illustration. From the Ward identity in the scheme of the closed time path Green's function (CTPGF) it is shown that the Nambu-Goldstone mode splits into two waves with different dissipations.