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The Possibility of a Non-Lagrangian Theory of Gravity

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arxiv 2005.09739 v2 pith:6ESUA4NM submitted 2020-05-18 gr-qc

The Possibility of a Non-Lagrangian Theory of Gravity

classification gr-qc
keywords generalgravitynon-lagrangianpossibilityprinciplesproblemsrelativitytheory
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General Relativity resembles a very elegant crystal glass: If we touch its principles, that is, its Lagrangian, there is a risk of breaking everything. Or, if we will, it is like a short blanket: Curing some problems creates new problems. This paper is devoted to bring to light the reasons why we pursue the possibility of a non-Lagrangian theory of gravity under the hypothesis of an extension of the original general relativity with an ansatz inspired in the fundamental principles of classical and quantum physics.

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