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Observación de un cristal de tiempo continuo

Phatthamon Kongkhambut1, Jim Skulte1,2, Ludwig Mathey1,2

  • 1Zentrum für Optische Quantentechnologien and Institut für Laser-Physik, Universität Hamburg, 22761 Hamburg, Germany.

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Los investigadores han realizado un cristal de tiempo continuo, una nueva fase de la materia que exhibe oscilaciones espontáneas. Este estado dinámico de muchos cuerpos rompe la simetría de traducción de tiempo continuo y es robusto contra las perturbaciones.

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Área de la Ciencia:

  • La física cuántica
  • Física de la materia condensada
  • Sistemas de muchos cuerpos

Sus antecedentes:

  • Los cristales de tiempo son estados de la materia que exhiben un comportamiento periódico en el tiempo.
  • Los cristales de tiempo discretos se han realizado en sistemas impulsados periódicamente.
  • Los cristales de tiempo continuo, que rompen la simetría de traducción de tiempo continuo, siguen siendo elusivo experimentalmente.

Objetivo del estudio:

  • Para experimentar con un cristal de tiempo continuo.
  • Investigar un sistema de cavidad atómica disipadora de bombeo continuo para las fases dinámicas emergentes.
  • Caracterizar las propiedades de la fase de ciclo límite observada.

Principales métodos:

  • Utilizando un sistema de cavidad atómica de bombeo continuo.
  • Observando las oscilaciones emergentes en el número de fotones intracavitario.
  • Analizando la aleatoriedad de la fase de oscilación en diferentes realizaciones.
  • Prueba de la solidez de los ciclos límite frente a las perturbaciones temporales.

Principales resultados:

  • Se observó una fase de ciclo límite en el sistema de cavidad atómica.
  • Se ha demostrado la ruptura espontánea de la simetría de traducción en tiempo continuo debido a la fase de oscilación aleatoria.
  • Confirmó la robustez de las oscilaciones emergentes contra las perturbaciones temporales.

Conclusiones:

  • La fase de ciclo límite observada representa la primera realización experimental de un cristal de tiempo continuo.
  • Este estado dinámico de muchos cuerpos proporciona una nueva plataforma para estudiar la física fundamental.
  • La robustez del cristal de tiempo continuo abre caminos para aplicaciones potenciales.