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... QC’s Don’t Provide Exponential Speedups for Black-Box Search I.e., if you want more than the N Grover speedup for solving an NP-complete problem, then you’ll The “BBBV Noproblem SuperSearch Principle” can even need to exploit structure be applied in physicsBrassard, (e.g., to lower-bound [Bennett, ...
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a
roller
coaster,
some
mechanical
energy
(KE
+
PE)
is
transferred
into
_______________
energy
(because
of
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&
_______________
energy
(because
of
the
noise).
Overall,
you
end
up
with
the
____________
total
amount
 of
energy
as
the
original
amount
of
__________________
energy.
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< 1 ... 154 155 156 157 158 159 160 161 162 ... 268 >

Eigenstate thermalization hypothesis

The Eigenstate Thermalization Hypothesis (or ETH) is a set of ideas which purports to explain when and why an isolated quantum mechanical system can be accurately described using equilibrium statistical mechanics. In particular, it is devoted to understanding how systems which are initially prepared in far-from-equilibrium states can evolve in time to a state which appears to be in thermal equilibrium. The phrase ""eigenstate thermalization"" was first coined by Mark Srednicki in 1994, after similar ideas had been introduced by Josh Deutsch in 1991. The principal philosophy underlying the eigenstate thermalization hypothesis is that instead of explaining the ergodicity of a thermodynamic system through the mechanism of dynamical chaos, as is done in classical mechanics, one should instead examine the properties of matrix elements of observable quantities in individual energy eigenstates of the system.
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