Optimal Choices of Reference for Quasi-local Energy - General Relativity and Quantum CosmologyReport as inadecuate




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Abstract: We have proposed a program for determining the reference for the quasi-localenergy defined in the covariant Hamiltonian formalism. Our program has beentested by applying it to the spherically symmetric spacetimes. With respect todifferent observers we found that the quasi-local energy can be positive, zero,or even negative. The observer measuring the maximum energy was identified; theassociated energy is positive for both the Schwarzschild and theFriedmann-Lema\^{i}tre-Robertson-Walker spacetimes.



Author: Chiang-Mei Chen, Jian-Liang Liu, James M. Nester, Ming-Fan Wu

Source: https://arxiv.org/







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