标题： 量子放大，遗迹引力波和兰道尔的猜想 显示英文标题

标题： Quantum amplification, relic gravitons and Landauer's conjecture

摘要： 根据兰道尔原理的微观表述，当信息被删除时，系统的冯·诺依曼熵会减少，并伴随着相应的能量成本。 尽管从同一观点来看，熵的增长应该不受限制，但我们表明在量子放大过程中，热量流动会限制冯·诺依曼熵的增加。 当应用于遗迹引力子（频率介于aHz区域和THz领域之间）的情况时，此处得到的限制设定了初始热引力子和宇宙暴胀总持续时间的上限。 显示英文摘要

摘要： According to the microscopic formulation of Landauer's principle, when information is deleted the Von Neumann entropy of the system gets reduced with a corresponding energy cost. Although within the same perspective the growth of the entropy should remain unconstrained we show that during quantum amplification the heat flow does restrict the increase of the Von Neumann entropy. When applied to the case of relic gravitons (with frequencies between the aHz region and the THz domain) the bounds obtained here set a limit on initial thermal gravitons and on the total duration of inflation.