Effective Lagrangian for Nambu-Goldstone modes in nonequilibrium open systems
| Autor: | Suro Kim, Masaru Hongo, Toshifumi Noumi, Atsuhisa Ota |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
High Energy Physics - Theory
Nuclear Theory FOS: Physical sciences Non-equilibrium thermodynamics 01 natural sciences Nuclear Theory (nucl-th) High Energy Physics - Phenomenology (hep-ph) Gapless playback 0103 physical sciences Effective lagrangian Effective field theory 010306 general physics Nuclear theory Goldstone Condensed Matter - Statistical Mechanics Physics Statistical Mechanics (cond-mat.stat-mech) 010308 nuclear & particles physics High Energy Physics - Phenomenology Classical mechanics High Energy Physics - Theory (hep-th) Quantum Gases (cond-mat.quant-gas) Internal symmetry visual_art visual_art.visual_art_medium Condensed Matter - Quantum Gases |
| Zdroj: | Physical Review |
| Popis: | We develop the effective field theory of diffusive Nambu-Goldstone (NG) modes associated with spontaneous internal symmetry breaking taking place in nonequilibrium open systems. The effective Lagrangian describing semi-classical dynamics of the NG modes is derived and matching conditions for low-energy coefficients are also investigated. Due to new terms peculiar to open systems, the associated NG modes show diffusive gapless behaviors in contrast to the propagating NG mode in closed systems. We demonstrate two typical situations relevant to the condensed matter physics and high-energy physics, where diffusive type-A or type-B NG modes appear. 6 pages(+3 pages supplemental material), 1 figure |
| Databáze: | OpenAIRE |
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