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Simetría anti-paridad-tiempo en sistemas difusos
Ying Li1, Yu-Gui Peng1,2, Lei Han1,3
1Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore.
Science (New York, N.Y.)
|April 13, 2019
Resumen
Los investigadores exploran la simetría anti-paridad-tiempo en los sistemas difusos, específicamente en la transferencia de calor. Esta ruptura de simetría conduce a una transición de fase en los perfiles de temperatura, extendiendo los conceptos de paridad-tiempo más allá de la física de ondas.
Área de la Ciencia:
- Termodinámica y mecánica estadística
- Física no hermética
- Fenómenos del transporte
Sus antecedentes:
- La simetría paridad-tiempo (PT) y su extensión, la simetría anti-paridad-tiempo (APT), son cruciales en la física de ondas, particularmente en sistemas con ganancia y pérdida.
- Los sistemas de ondas generalmente se modelan utilizando operadores hermíticos, pero los aspectos no hermíticos introducen propiedades únicas.
- La aplicación de estas simetrías se ha limitado en gran medida a la dinámica de ondas.
Objetivo del estudio:
- Investigar la aplicabilidad de los conceptos de simetría de tiempo de paridad y anti-paridad a los sistemas difusos, más allá de la física de ondas tradicional.
- Para analizar la transferencia de calor en medios contra movimiento e identificar la presencia de simetría anti-paridad-tiempo.
- Para explorar las implicaciones de la ruptura de simetría espontánea en estos sistemas difusos.
Principales métodos:
- Análisis teórico de la dinámica de la transferencia de calor en dos medios contra movimiento.
- Modelado matemático para demostrar el surgimiento de la simetría anti-paridad-tiempo.
- Investigación de las transiciones de fase resultantes de la ruptura de simetría espontánea.
Principales resultados:
- El sistema estudiado de transferencia de calor en medios contra movimiento exhibe simetría anti-paridad-tiempo.
- La ruptura de simetría espontánea conduce a una transición de fase distinta en los perfiles de temperatura.
- La transición cambia los perfiles de temperatura de un estado inmóvil a un estado en movimiento, a pesar del movimiento mecánico de fondo.
Conclusiones:
- Los conceptos de simetría paridad-tiempo pueden extenderse con éxito más allá de la física de ondas a la dinámica difusiva.
- Los hallazgos demuestran una nueva aplicación de la simetría anti-paridad-tiempo en la comprensión del transporte de calor y masa.
- Esta investigación abre nuevas vías para manipular los fenómenos de transporte utilizando principios derivados de la física no hermética.
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