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Memory burden effect in black holes and solitons: Implications for PBH
Physical Review D ( IF 4.6 ) Pub Date : 2024-09-13 , DOI: 10.1103/physrevd.110.056029 Gia Dvali, Juan Sebastián Valbuena-Bermúdez, Michael Zantedeschi
Physical Review D ( IF 4.6 ) Pub Date : 2024-09-13 , DOI: 10.1103/physrevd.110.056029 Gia Dvali, Juan Sebastián Valbuena-Bermúdez, Michael Zantedeschi
The essence of the memory burden effect is that a load of information carried by a system stabilizes it. This universal effect is especially prominent in systems with a high capacity of information storage, such as black holes and other objects with maximal microstate degeneracy, the entities universally referred to as “saturons.” The phenomenon has several implications. The memory burden effect suppresses a further decay of a black hole, the latest, after it has emitted about half of its initial mass. As a consequence, the light primordial black holes that previously were assumed to be fully evaporated are expected to be present as viable dark matter candidates. In the present paper, we deepen the understanding of the memory burden effect. We first identify various memory burden regimes in generic Hamiltonian systems and then establish a precise correspondence in solitons and in black holes. We make transparent, at a microscopic level, the fundamental differences between the stabilization by a quantum memory burden versus the stabilization by a long-range classical hair due to a spin or an electric charge. We identify certain new features of potential observational interest, such as the model-independent spread of the stabilized masses of initially degenerate primordial black holes.
中文翻译:
黑洞和孤子中的记忆负担效应:对 PBH 的影响
记忆负担效应的本质是系统携带的大量信息使其稳定。这种普遍效应在具有高信息存储容量的系统中尤其突出,例如黑洞和其他具有最大微观状态简并性的物体,这些实体通常被称为“饱和粒子”。这种现象有几个含义。记忆负担效应抑制了黑洞的进一步衰变,这是最新的,在黑洞释放出其初始质量的一半左右之后。因此,之前被认为完全蒸发的轻质原初黑洞预计将作为可行的暗物质候选者出现。在本文中,我们加深了对记忆负担效应的理解。我们首先识别通用哈密顿系统中的各种记忆负担机制,然后在孤子和黑洞中建立精确的对应关系。我们在微观层面上揭示了量子记忆负担的稳定与由于自旋或电荷而产生的长程经典头发的稳定之间的根本区别。我们发现了某些具有潜在观测兴趣的新特征,例如最初简并的原初黑洞的稳定质量的与模型无关的扩散。
更新日期:2024-09-13
中文翻译:
黑洞和孤子中的记忆负担效应:对 PBH 的影响
记忆负担效应的本质是系统携带的大量信息使其稳定。这种普遍效应在具有高信息存储容量的系统中尤其突出,例如黑洞和其他具有最大微观状态简并性的物体,这些实体通常被称为“饱和粒子”。这种现象有几个含义。记忆负担效应抑制了黑洞的进一步衰变,这是最新的,在黑洞释放出其初始质量的一半左右之后。因此,之前被认为完全蒸发的轻质原初黑洞预计将作为可行的暗物质候选者出现。在本文中,我们加深了对记忆负担效应的理解。我们首先识别通用哈密顿系统中的各种记忆负担机制,然后在孤子和黑洞中建立精确的对应关系。我们在微观层面上揭示了量子记忆负担的稳定与由于自旋或电荷而产生的长程经典头发的稳定之间的根本区别。我们发现了某些具有潜在观测兴趣的新特征,例如最初简并的原初黑洞的稳定质量的与模型无关的扩散。