量子猝灭对晚期相结构的影响
Modification of late time phase structure by quantum quenches
摘要：
的耦合常数（猝灭）的突然变化的理论在后期的相结构的后果进行了探讨。我们详细研究了大N极限下的三维φ ^6模型，并表明与静态情形相比，φ ^6耦合具有更宽的稳定性范围。此外，出现了一个新的大质量相，对于足够大的耦合，它成为主导真空。我们认为，这些新的现象不能描述一个简单的热化效应或出现一个单一的有效温度。
英文摘要：
The consequences of the sudden change in the coupling constants (quenches) on the phase structure of the theory at late times are explored. We study in detail the three dimensional phi^6 model in the large N limit, and show that the phi^6 coupling enjoys a widened range of stability compared to the static scenario. Moreover, a new massive phase emerges, which for sufficiently large coupling becomes the dominant vacuum. We argue that these novel phenomena cannot be described by a simple thermalization effect or the emergence of a single effective temperature.
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