In this paper we consider the negative energy problem in generalized Vaidya spacetime. We consider several models where we have the naked singularity as a result of the gravitational collapse. In these models we investigate the geodesics for particles with negative energy when the II type of the matter field satisfies the equation of the state $P=\alpha \rho$ ($\alpha \in [0,1]$).

中文翻译：

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广义Vaidya时空中的负能

在本文中，我们考虑了广义Vaidya时空中的负能量问题。我们考虑几种模型，这些模型由于重力坍塌而具有赤裸裸的奇异性。在这些模型中，当物质场的II类满足状态方程时，我们研究具有负能量的粒子的测地线$P=\alpha \rho$ （$\alpha \in [0，\mathrm{1个}]$）。