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arXiv 0909.3834gr-qchep-th
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突现引力的观测模型

Analogue Models for Emergent Gravity

Stefano Liberati, Florian Girelli, Lorenzo Sindoni

摘要:

引力在基本相互作用中脱颖而出,因为它显然与量子描述不相容。此外,引力理论的热力学方面表现为某些经典解(如黑洞)令人困惑的特征。引力理论的这些和其他方面最近导致了这样一种观点,即引力可能不是一种基本相互作用,而是一种突现现象,是某种更基本理论的流体力学极限。为了进一步探索这种可能性,我们将在这里讨论两个系统,在那里观察到这种引力动力学的出现。我们将首先考虑非相对论性的玻色-爱因斯坦凝聚体的情况,然后考虑基于黎曼流形上的标量场的更抽象的模型。这将使我们能够证明与紧急重力场景相关的一般问题,特别注意洛伦兹和非同态不变性的作用和性质。

英文摘要:

Gravity stands out among the fundamental interactions because of its apparent incompatibility with having a quantum description. Moreover, thermodynamic aspects of gravitation theory appears as puzzling features of some classical solutions such as black holes. These and other aspects of gravitational theories have recently lead to the proposal that gravity might not be a fundamental interaction but rather an emergent phenomenon, a sort of hydrodynamic limit of some more fundamental theory. In order to further explore this possibility we shall here discuss two systems where such emergence of a gravitational dynamics is observed. We shall consider first the case of a non-relativistic Bose-Einstein condensate and then a more abstract model based on scalar fields living on a Riemannian manifold. This will allow us to put in evidence the general issues related to emergent gravity scenarios with a particular attention to the role and nature of Lorentz and diffeomorphism invariance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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