A consistent first-order model for relativistic heat flow
A consistent first-order model for relativistic heat flow
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相对论热流的一致一阶模型
DOI:
10.1088/0264-9381/28/19/195023
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发表时间:
2011
影响因子:
3.5
通讯作者:
Andersson N
中科院分区:
文献类型:
--
作者:
Andersson N
This paper revisits the problem of heat conduction in relativistic fluids, associated with issues concerning both stability and causality. It has long been known that the problem requires information involving second-order deviations from thermal equilibrium. Basically, any consistent first-order theory needs to remain cognizant of its higher order origins. We demonstrate this by carrying out the required first-order reduction of a recent variational model. We provide an analysis of the dynamics of the system, obtaining the conditions that must be satisfied in order to avoid instabilities and acausal signal propagation. The results demonstrate, beyond any reasonable doubt, that the model has all the features one would expect of a real physical system. In particular, we highlight the presence of a second sound for heat in the appropriate limit. We also make contact with previous work on the problem by showing how the various constraints on our system agree with previously established results.
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DOI:
--
发表时间:
1991
期刊:
Proceedings of the Royal Society of London. Series A, Mathematical and physical sciences
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期刊:
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--
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