标题： 中子$\to$异常物质转化的燃烧气体动力学：对现实情景的评估 显示英文标题

标题： Combustion gasdynamics of the neutron $\to$ strange matter conversion: towards an assessment of realistic scenarios

摘要： 在过去的几年中，文献中出现了多种关于中子星转化为奇异星的描述。 一般来说，这些工作将该过程视为一种单纯的相变，或只关注微观动力学，试图确定转换的速度及其后果。 在本工作中，我们重新研究了假设的“燃烧”n$\to$SQM在致密恒星环境中的传播。 我们详细讨论了影响火焰的不稳定性，并给出了对湍流区域的应用新结果。 火焰的加速、可能向分布区域的转变以及进一步的爆燃到爆轰机制得到了讨论。 作为一般结果，我们得出结论，燃烧发生在（至少）湍流瑞利-泰勒或分布区域。 在这两种情况下，恒星转换的速度比vlam大几个数量级，使得后者在这种问题中在实践中无关紧要。 转向爆轰并不排除，实际上似乎由物理环境所偏好，但确定的答案需要完整的数值模拟。 显示英文摘要

摘要： A variety of descriptions of the conversion of a neutron into a strange star have appeared in the literature over the years. Generally speaking, these works treat the process as a mere phase transition or ignore everything but microscopic kinetics, attempting to pin down the speed of the conversion and its consequences. We revisit in this work the propagation of the hypothetical "combustion" n $\to$ SQM in a dense stellar environment. We address in detail the instabilities affecting the flame and present new results of application to the turbulent regime. The acceleration of the flame, the possible transition to the distributed regime and further deflagration-to-detonation mechanism are addressed. As a general result, we conclude that the burning happens in (at least) either the turbulent Rayleigh-Taylor or the distributed regime. In both cases the velocity of the conversion of the star is several orders of magnitude larger than vlam, making the latter irrelevant in practice for this problem. A transition to a detonation is by no means excluded, actually it seems to be favored by the physical setting, but a definitive answer would need a full numerical simulation.