Can all the systems have a Hamiltonian description?
95019
An example of non-Hamiltonian systems
30968
Is it possible that every set can be specified?
148498
Specific system of differential equations
22277
Is it possible to reconstruct the Hamiltonian from knowledge of its ground state wave function?
40355
Equivalence between Hamiltonian and Lagrangian Mechanics
117010
What does it mean for a Hamiltonian or system to be gapped or gapless?
44747
Finding the effective Hamiltonian in a certain subspace
139993
Quantum systems without a classical analogue?
60889
What exactly are Hamiltonian Mechanics (and Lagrangian mechanics)
26896
Why can't $ i\hbar\frac{\partial}{\partial t}$ be considered the Hamiltonian operator?
13121
Does every connected $r$-regular bipartite graph contain a Hamiltonian cycle?
22279
Local and Global Symmetries
37764
Is the converse of Cayley-Hamilton Theorem true?
80486
Integrable vs. Non-Integrable systems
25002
Is this true: any bipartite graph with unbalanced vertex parity is not Hamiltonian?
114672
Why do we use the Lagrangian and Hamiltonian instead of other related functions?
55700
Is it possible to recover Classical Mechanics from Schrödinger's equation?