论文标题
在弦乐的非局部场理论中假真真空的命运
Fate of the false vacuum in string-inspired nonlocal field theory
论文作者
论文摘要
在本文中，我们研究了科尔曼在弱非本地理论中反弹，这是源自弦场理论的动机。动力学术语是通过无限的一系列高级导数扩展的，该衍生物以$ m $ $ m $发挥作用，而无需在质谱中引入任何新的州或鬼魂。我们计算薄壁近似中的气泡成核，以半古典方式处理系统。我们发现，与标准的本地弹跳场景相比，该理论中非本地尺度$ m $的影响是抑制从虚假到真空的真空真空吸尘器的效果。同样，我们表明，随着我们远离气泡壁的移动，非局部性的影响会降低，并且这种抑制仅在核泡泡的壁周围显着。从我们的研究中，我们得出的结论是，主要效果是由于非局部性涂抹了局部气泡剖面的解决方案。然而，气泡壁的能量仍然不受该理论在薄壁近似中的微观非局部行为的影响。我们还讨论了我们结果对宇宙学的lee-wick理论和应用的案例。
In this article, we study Coleman bounce in weakly nonlocal theories which are motivated from string field theory. The kinetic term is extended via an infinite series of high-order derivatives, which comes into play at an energy scale $M$, without introducing any new states or ghosts in the mass spectrum. We calculate the bubble nucleation in thin-wall approximation, treating the system in semi-classical manner. We find that the effect of nonlocal scale $M$ in the theory is to suppress the vacuum tunneling rate from false to true vacuum compared to the standard local bouncing scenario. Likewise, we show that as we move further away from the bubble wall, the effects of nonlocality gets reduced and this suppression is significant only around the wall of the nucleated bubble. From our investigations, we conclude that the main effect is due to the fact that the nonlocality smears the solution of the local bubble profile. However, the energy of the bubble wall remains unaffected by the microscopic nonlocal behavior of the theory in the thin-wall approximation. We also discuss the cases for Lee-Wick theories and applications of our result to cosmology.
