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math-ph2026
Alternative Hamiltonian and Lagrangian Approaches for Constrained Systems
M. A. de Andrade, C. Neves, E. V. Corrêa Silva
While standard Hamiltonian and Lagrangian methods are powerful for unconstrained classical systems, they are not directly suited to constrained ones, despite the existence of well-…
gr-qc2026
Quantum Tunneling and the Emergence of Classical Spacetime in Einstein-Æther Quantum Cosmology
Germano A. Monerat, Alessandro O. Castro Junior, Eduardo V. Corrêa Silva +1
We investigate a quantum cosmological model within the framework of Einstein-Æther gravity. The model consists of a positively curved FLRW Universe whose matter content is describe…