On the second law of thermodynamics
On the second law of thermodynamics
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关于热力学第二定律
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
R. Penrose
中科院分区：
文献类型：
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作者：
R. Penrose
热力学第二定律的基础有两个不同的方面。第一个问题是为什么熵在未来会上升，第二个问题是为什么熵在过去会下降。统计物理学家往往更关心第一个问题，并仔细考虑定义和数学细节。第二个问题的性质完全不同;它涉及宇宙学和量子引力领域，这些领域的数学和物理问题都很难理解。
The second law of thermodynamics has two distinct aspects to its foundations. The first concerns the question of why entropy goes up in the future, and the second, of why it goes down in the past. Statistical physicists tend to be more concerned with the first question and with careful considerations of definition and mathematical detail. The second question is of quite a different nature; it leads into areas of cosmology and quantum gravity, where the mathematical and physical issues are ill understood.