Classical solutions to relativistic Burgers equations in FLRW space-times
Classical solutions to relativistic Burgers equations in FLRW space-times
复制标题
FLRW 时空中相对论 Burgers 方程的经典解
DOI:
10.1007/s11425-017-9309-7
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发表时间:
2020-02
期刊:
影响因子:
--
通讯作者:
Wei Changhua
中科院分区:
文献类型:
--
作者:
Huo Saisai;Wei Changhua
We are interested in the classical solutions to the Cauchy problem of relativistic Burgers equations evolving in Friedmann-Lemat tre-Robertson-Walker (FLRW) space-times, which are spatially homogeneous, isotropic expanding or contracting universes. In such kind of space-times, we first derive the relativistic Burgers equations from the relativistic Euler equations by letting the pressure be zero. Then we can show the global existence of the classical solution to the derived equation in the accelerated expanding space-times with small initial data by the method of characteristics when the spacial dimensionn= 1 and energy estimate whenn⩾ 2, respectively. Furthermore, we can also show the lifespan of the classical solution by similar methods when the expansion rate of the space-times is not so fast.
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