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gr-qc2007
Phase-Space Noncommutative Quantum Cosmology
Catarina Bastos, Orfeu Bertolami, Nuno Costa Dias +1
We present a noncommutative extension of Quantum Cosmology and study the Kantowski-Sachs (KS) cosmological model requiring that the two scale factors of the KS metric, the coordina…
math-ph2007
Self-adjoint, globally defined Hamiltonian operators for systems with boundaries
Nuno Costa Dias, Andrea Posilicano, Joao Nuno Prata
For a general self-adjoint Hamiltonian operator on the Hilbert space $L^2(\RE^d)$, we determine the set of all self-adjoint Hamiltonians on $L^2(\RE^d)$ that dynamically…