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Entropía de entrelazamiento como una sonda más allá del horizonte
Konstantinos Boutivas1, Dimitrios Katsinis1, Georgios Pastras1
1National and Kapodistrian University of Athens, Department of Physics, 15784 Zografou, Attiki, Greece.
Physical review letters
|August 27, 2025
Resumen
La expansión del espacio de Sitter mejora la entropía del entrelazamiento a través de la compresión del modo. Este efecto introduce una dependencia logarítmica en el tamaño del sistema, relevante para los modelos cosmológicos.
Área de la Ciencia:
- Teoría del campo cuántico en el espacio-tiempo curvo
- Cosmología
- Entropía del entrelazamiento
Sus antecedentes:
- La entropía de entrelazamiento cuantifica las correlaciones cuánticas en un sistema.
- El espacio de De Sitter es un modelo para un universo acelerado.
- La compresión de modo es un fenómeno cuántico que afecta las propiedades del campo.
Objetivo del estudio:
- Investigar analíticamente el impacto de la expansión cósmica en la entropía del entrelazamiento.
- Para determinar cómo la compresión del modo influye en el entrelazamiento en el espacio de Sitter.
- Establecer la relación entre el tamaño del sistema y la entropía del entrelazamiento en contextos cosmológicos.
Principales métodos:
- Cálculos analíticos de la entropía de entrelazamiento para un campo libre.
- Investigando los efectos de la compresión del modo en el espacio-tiempo de de Sitter.
- Derivando la dependencia de la entropía del entrelazamiento en el tamaño del sistema.
Principales resultados:
- La expansión cósmica, a través de la compresión del modo, mejora la entropía del entrelazamiento.
- Un término logarítmico dependiente del tamaño del sistema se identifica en la entropía de entrelazamiento.
- Esta dependencia de tamaño es relevante para los universos espacialmente finitos y los primeros modos inflacionarios.
Conclusiones:
- La expansión del espacio de Sitter altera fundamentalmente la entropía del entrelazamiento.
- El término logarítmico identificado proporciona un nuevo observable en entornos cosmológicos.
- Este trabajo conecta conceptos de información cuántica con estructuras cósmicas a gran escala.
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