Thx, excellent lecture!
 The ontological ground state as MMY states is the Self.  However, the ground 
state in physics Is something relative, the zero point energy state.
 There's no known connection between the Self and the ground state as described 
in physics.
 If there is such a connection, let's see the references outside of MMY and MUM.
 Wikipedia:
 The ground state of a quantum mechanical 
https://en.wikipedia.org/wiki/Quantum_mechanics system is its lowest-energy 
https://en.wikipedia.org/wiki/Energy state 
https://en.wikipedia.org/wiki/Stationary_state; the energy of the ground state 
is known as the zero-point energy 
https://en.wikipedia.org/wiki/Zero-point_energy of the system. An excited state 
https://en.wikipedia.org/wiki/Excited_state is any state with energy greater 
than the ground state. In the quantum field theory 
https://en.wikipedia.org/wiki/Quantum_field_theory, the ground state is usually 
called the vacuum state https://en.wikipedia.org/wiki/Vacuum_state or the 
vacuum https://en.wikipedia.org/wiki/Vacuum#The_quantum-mechanical_vacuum.
 If more than one ground state exists, they are said to be degenerate 
https://en.wikipedia.org/wiki/Degenerate_energy_level. Many systems have 
degenerate ground states. Degeneracy occurs whenever there exists a unitary 
operator https://en.wikipedia.org/wiki/Unitary_operator which acts 
non-trivially on a ground state and commutes 
https://en.wikipedia.org/wiki/Commutator with the Hamiltonian 
https://en.wikipedia.org/wiki/Hamiltonian_(quantum_mechanics) of the system.
 According to the third law of thermodynamics 
https://en.wikipedia.org/wiki/Third_law_of_thermodynamics, a system at absolute 
zero https://en.wikipedia.org/wiki/Absolute_zero temperature 
https://en.wikipedia.org/wiki/Temperature exists in its ground state; thus, its 
entropy https://en.wikipedia.org/wiki/Entropy is determined by the degeneracy 
of the ground state. Many systems, such as a perfect crystal lattice 
https://en.wikipedia.org/wiki/Crystal_lattice, have a unique ground state and 
therefore have zero entropy at absolute zero. It is also possible for the 
highest excited state to have absolute zero 
https://en.wikipedia.org/wiki/Absolute_zero temperature 
https://en.wikipedia.org/wiki/Temperature for systems that exhibit negative 
temperature https://en.wikipedia.org/wiki/Negative_temperature

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