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