ITP OpenIR  > 理论物理所2012年知识产出
A quantum solution to Gibbs paradox with few particles
Dong, H; Cai, CY; Sun, CP; Sun, CP (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.
2012
发表期刊SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
ISSN1674-7348
卷号55期号:10页码:1727-1733
摘要We present a fully quantum solution to the Gibbs paradox (GP) with an illustration based on a gedanken experiment with two particles trapped in an infinite potential well. The well is divided into two cells by a solid wall, which could be removed for mixing the particles. For the initial thermal state with correct two-particle wavefunction according to their quantum statistics, the exact calculations show the entropy changes are the same for boson, fermion and non-identical particles. With the observation that the initial unmixed state of identical particles in the conventional presentations actually is not of a thermal equilibrium, our analysis reveals the quantum origin of the paradox, and confirms Jaynes' observation that entropy increase in Gibbs mixing is only due to the including more observables. To further show up the subtle role of the quantum mechanism in the GP, we study the different finite size effect on the entropy change and show the work performed in the mixing process is different for various types of particles.
部门归属[Cai ChengYun; Sun ChangPu] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Dong Hui] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
关键词Maxwells Demon
学科领域Physics
资助者National Natural Science Foundation of China [11121403, 10935010, 11074261] ; National Natural Science Foundation of China [11121403, 10935010, 11074261] ; National Natural Science Foundation of China [11121403, 10935010, 11074261] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]
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收录类别SCI
语种英语
资助者National Natural Science Foundation of China [11121403, 10935010, 11074261] ; National Natural Science Foundation of China [11121403, 10935010, 11074261] ; National Natural Science Foundation of China [11121403, 10935010, 11074261] ; National Natural Science Foundation of China [11121403, 10935010, 11074261]
WOS记录号WOS:000308953800001
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15024
专题理论物理所2012年知识产出
通讯作者Sun, CP (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.
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GB/T 7714
Dong, H,Cai, CY,Sun, CP,et al. A quantum solution to Gibbs paradox with few particles[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2012,55(10):1727-1733.
APA Dong, H,Cai, CY,Sun, CP,&Sun, CP .(2012).A quantum solution to Gibbs paradox with few particles.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,55(10),1727-1733.
MLA Dong, H,et al."A quantum solution to Gibbs paradox with few particles".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 55.10(2012):1727-1733.
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