Towards a geometrical interpretation of rainbow geometries

نویسندگان

چکیده

In the literature, there are several papers establishing a correspondence between deformed kinematics and nontrivial (momentum dependent) metric. this work, we study in detail relationship trajectories given by Hamiltonian geodesic motion obtained from geometry cotangent bundle, finding that both coincide when is identified with squared distance momentum space. Moreover, following natural structure of bundle geometry, one can obtain generalized Einstein equations. Since metric not invariant under diffeomorphisms (changes coordinates) note that, order to have conserved tensor (in same sense general relativity), privileged basis appears, completely new result, cannot be found absence space-time curvature which settles long standing ambiguity geometric approach. After consider an expanding Universe Raychaudhuri's equations, show how construct vacuum solutions Finally, make comment about possible phenomenological implications our framework.

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ژورنال

عنوان ژورنال: Classical and Quantum Gravity

سال: 2021

ISSN: ['1361-6382', '0264-9381']

DOI: https://doi.org/10.1088/1361-6382/ac05d7