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hep-ph2026
On the Consistency of Covariant Light-Speed Variation in Doubly Special Relativity
Hao Li, Jie Zhu
Doubly special relativity (DSR) introduces an observer-independent energy scale while preserving a deformed relativistic notion of covariance. In many realizations, this leads to a…
hep-ph2026
Hamiltonian Constraints on Spontaneous Lorentz Symmetry Breaking in the Bumblebee Model
Jie Zhu, Hao Li, Zhi Xiao
This study demonstrates that the common practice of determining spontaneous Lorentz violation via the minimum of a Lagrangian potential is generally incorrect. By analyzing the Ham…