论时间：因果关系与量子引力冲突
This text revolves around a new and unusual view on the most fundamental puzzle of physics. It focusses on the key aspect that makes the role of the time dimension fundamentally different: causality. It deals on the one hand with general relativity, and on the other hand with quantum theory. The implicit and intuitive way by which causality is usually taken for granted is just made explicit and less self-evident, shedding a new light on the gravity-quantum conflict. The case is made that gravity is a necessary condition for a causal universe. But upon turning to the "pure" unitary quantum physics explaining the nature of matter one is dealing with the strictly a-causal time expressed through the thermal quantum field theory machinery. When this a-causal microscopic and causal macroscopic world meet, one encounters the wavefunction collapse, that itself may be rooted in the quantum-gravity conflict. Modern ideas are discussed resting on eigenstate thermalization showing how this may lie eventually at the origin of irreversible thermodynamics, with its famous second law setting also a direction of time. The case is anchored in the sophisticated modern mathematical machinery of both general relativity and quantum physics which is normally barely disseminated beyond the theoretical physics floors. The book is unique in the regard that the consequences of this machinery - Riemannian geometry and Penrose diagrams, thermal quantum fields, quantum non-equilibrium and so forth — are explained in an original, descriptive language conveying the conceptual consequences while avoiding mathematical technicalities.
英文|2024|ISBN:0198920776|113页|真PDF | 5.43 MB 本文围绕着物理学最基本难题的一种新的、不同寻常的观点展开。它侧重于使时间维度的作用从根本上不同的关键方面：因果关系。它一方面涉及广义相对论，另一方面涉及量子理论。因果关系通常被视为理所当然的隐含和直观方式只是变得明确而不那么不言而喻，为引力-量子冲突提供了新的视角。有人认为引力是因果宇宙的必要条件。但是，在转向解释物质本质的“纯”幺正量子物理学时，人们正在处理通过热量子场论机制表达的严格非因果时间。当这个非因果微观世界和因果宏观世界相遇时，人们会遇到波函数坍缩，这本身可能源于量子引力冲突。现代思想是圆盘本站不对文件进行储存，仅提供文件链接，请自行下载，本站不对文件内容负责，请自行判断文件是否安全，如发现文件有侵权行为，请联系管理员删除。
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