AI Article Synopsis
- The average dissipation in systems following the fluctuation theorem has a lower limit linked to the asymmetry in marginal distributions, quantified by relative entropy.
- This new lower bound is more precise than previous measures based on the precision of marginal distributions and can actually be reached under certain conditions.
- The findings are demonstrated through examples, including a significant experimental estimation of dissipation related to quantum annealing.
Article Abstract
For a system described by a multivariate probability density function obeying the fluctuation theorem, the average dissipation is lower bounded by the degree of asymmetry of the marginal distributions (namely the relative entropy between the marginal and its mirror image). We formally prove that such a lower bound is tighter than the recently reported bound expressed in terms of the precision of the marginal (i.e., the thermodynamic uncertainty relation) and is saturable. We illustrate the result with examples and we apply it to achieve one of the most accurate experimental estimations of dissipation associated with quantum annealing to date.
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| http://dx.doi.org/10.1103/PhysRevE.104.L022102 | DOI Listing |
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