Using thermodynamics to identify quantum subsystems
Using thermodynamics to identify quantum subsystems
复制标题
使用热力学识别量子子系统
DOI:
10.1080/09500340.2017.1295108
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发表时间:
2017
影响因子:
1.3
通讯作者:
Stokes A
中科院分区:
文献类型:
--
作者:
Stokes A
There are many ways to decompose the Hilbert space H of a composite quantum system into tensor product subspaces. Different subsystem decompositions generally imply different interaction Hamiltonians V, and therefore different expectation values for subsystem observables. This means that thE uniqueness of physical predictions is not guaranteed, despite the uniqueness of the total Hamiltonian H and the total Hilbert space. Here we use Clausius' version of the second law of thermodynamics (CSL) and standard identifications of thermodynamic quantities to identify possible subsystem decompositions. It is shown that agreement with the CSL is obtained, whenever the total Hamiltonian and the subsystem-dependent interaction Hamiltonian commute (i.e. [H,V]=0). Not imposing this constraint can result in the transfer of heat from a cooler to a hotter subsystem, in conflict with thermodynamics. We also investigate the status of the CSL with respect to non- standard definitions of thermodynamic quantities and quantum subsystems.
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影响因子:
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通讯作者:
V. Gates;.. M. L. Ludwig-M.-L.-Ludwig-2273875465;J. A. Hartsuck;T. A. Steitz;H. Muirhead;J. C. Coppola;G. N. Reeke
DOI:
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发表时间:
2009
期刊:
影响因子:
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DOI:
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发表时间:
1978
期刊:
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DOI:
--
发表时间:
2010
期刊:
影响因子:
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作者:
A. Kurcz;A. Capolupo;Almut Beige;E. Giudice;G. Vitiello
通讯作者:
G. Vitiello