能量定义与暗能量：热力学分析
Energy definition and dark energy: a thermodynamic analysis
摘要：
采用能量动量张量为$T_{μν}$的源的Komar质量定义，并利用热力学压力定义，我们得到一个放松的能量动量守恒定律。随后，我们研究了所获得的能量-动量守恒定律的一些宇宙学后果。已经发现，在我们的设置中，宇宙的黑暗部分可以统一为一种宇宙流体。这种宇宙流体在推动宇宙进入加速膨胀阶段的同时，在宇宙演化过程中，它甚至可能表现出自己的重子行为。的确，以这种方式，虽然$T_{μν}$的行为是重子的，但它的某些部分，即满足普通能量-动量守恒定律的$T_{μν}(e)$，是造成当前加速膨胀的原因。
英文摘要：
Accepting the Komar mass definition of a source with energy-momentum tensor $T_{μν}$, and using the thermodynamic pressure definition, we find a relaxed energy-momentum conservation law. Thereinafter, we study some cosmological consequences of the obtained energy-momentum conservation law. It has been found out that the dark sectors of cosmos are unifiable into one cosmic fluid in our setup. While this cosmic fluid impels the universe to enter an accelerated expansion phase, it may even show a baryonic behavior by itself during the cosmos evolution. Indeed, in this manner, while $T_{μν}$ behaves baryonically, some parts of it, namely $T_{μν}(e)$ which is satisfying the ordinary energy-momentum conservation law, are responsible for the current accelerated expansion.
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