4,389 research outputs found

    Classical to quantum correspondence in dissipative directed transport

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    We compare the quantum and classical properties of the (Quantum) Isoperiodic Stable Structures -- (Q)ISSs -- which organize the parameter space of a paradigmatic dissipative ratchet model, i.e. the dissipative modified kicked rotator. We study the spectral behavior of the corresponding classical Perron-Frobenius operators with thermal noise and the quantum superoperators without it for small â„Źeff\hbar_{\rm eff} values. We find a remarkable similarity between the classical and quantum spectra. This finding significantly extends previous results -- obtained for the mean currents and asymptotic distributions only -- and on the other hand unveils a classical to quantum correspondence mechanism where the classical noise is qualitatively different from the quantum one. This is crucial not only for simple attractors but also for chaotic ones, where just analyzing the asymptotic distribution reveals insufficient. Moreover, we provide with a detailed characterization of relevant eigenvectors by means of the corresponding Weyl-Wigner distributions, in order to better identify similarities and differences. Finally, this model being generic, it allows us to conjecture that this classical to quantum correspondence mechanism is a universal feature of dissipative systems.Comment: 7 pages, 6 figure

    The Mother of Invention

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    I stopped by Maggie Cahill’s front lawn on Stonemill Road last week to hear her describe how she edited a full-length memoir and worked with the author to prepare it for submission to a publisher

    Our Calling

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    The Dayton Daily News today features my guest column, ?Lead in Service to the Common Good,? on its editorial page

    At Home

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    It never gets old. And never will. The view of the chapel as I arrive to campus in the quiet early morning is beautiful: whether shrouded in fog, covered in snow, or reflecting early daybreak

    The Power of Sharing Our Stories

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    There is nothing more transformative than hearing people tell their stories in their own words. Listening, we realize our shared humanity

    You Can Write!

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    Erma Bombeck devotees are every bit as passionate as Dayton Flyer fans I discovered at the opening of a new exhibit at Roesch Library that celebrates the humorist’s life and work

    Silver Linings

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    I flipped the script at a two-day virtual retreat with administrative leaders a couple weeks before the start of the semester and asked them to reflect on the unexpected silver linings of the pandemic

    24 Hours of Flyer Love

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    Talk about Flyer love! Some University of Dayton students are using their mini-spring break day on April 14 to fly #1Day1Dayton porch sheets, run a personal 5K, and tweet their love for their school

    Voices of Courage

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    These women are voices of courage on the University of Dayton\u27s campus and beyond. They\u27re fierce champions for diversity and inclusion. They work every day to build a just world

    A Century of Selfless Service

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    Guess who?s turning 100? In case you don?t know it, the University of Dayton is home to one of the oldest Army Reserve Officers? Training Corps (ROTC) programs in the country
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