Symbol H_c
wrong, does not touch the total energy of any closed system, and does not by itself explain where a nonzero reading comes from.
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Why this formula appears here
A coarse description reports less. It is built from a completely positive, trace-preserving map , a quantum channel sending fine states to coarse states, together with a coarse Hilbert space and a Hermitian coarse Hamiltonian on it. The simplest case is the partial trace over the bath, = [] with = ; nothing below depends on that particular choice, and a passive relabeling built from no discarding at all, treated next, is a channel too.
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Equation 8 · Evolutionary Physics
The Entry a Relabeling Cannot Write
This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text.
A coarse description reports less. It is built from a completely positive, trace-preserving map , a quantum channel sending fine states to coarse states, together with a coarse Hilbert space and a Hermitian coarse Hamiltonian on it. The simplest case is the partial trace over the bath, = [] with = ; nothing below depends on that particular choice, and a passive relabeling built from no discarding at all, treated next, is a channel too.
Meanings in this article
- : wrong, does not touch the total energy of any closed system, and does not by itself explain where a nonzero reading comes from.