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Sökning: WFRF:(Bluhm Marcus)

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1.
  • Bluhm, Marcus, et al. (författare)
  • Dynamics of critical fluctuations : Theory - phenomenology - heavy-ion collisions
  • 2020
  • Ingår i: Nuclear Physics A. - : ELSEVIER. - 0375-9474 .- 1873-1554. ; 1003
  • Tidskriftsartikel (refereegranskat)abstract
    • This report summarizes the presentations and discussions during the Rapid Reaction Task Force "Dynamics of critical fluctuations: Theory - phenomenology - heavy-ion collisions", which was organized by the ExtreMe Matter Institute EMMI and held at GSI, Darmstadt, Germany in April 2019. We address the current understanding of the dynamics of critical fluctuations in QCD and their measurement in heavy-ion collision experiments. In addition, we outline what might be learned from studying correlations in other physical systems, such as cold atomic gases.
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2.
  • Taranto, Philip, et al. (författare)
  • Landauer Versus Nernst : What is the True Cost of Cooling a Quantum System
  • 2023
  • Ingår i: PRX Quantum. - 2691-3399. ; 4:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Thermodynamics connects our knowledge of the world to our capability to manipulate and thus to control it. This crucial role of control is exemplified by the third law of thermodynamics, Nernst's unattainability principle, which states that infinite resources are required to cool a system to absolute zero temperature. But what are these resources and how should they be utilized And how does this relate to Landauer's principle that famously connects information and thermodynamics We answer these questions by providing a framework for identifying the resources that enable the creation of pure quantum states. We show that perfect cooling is possible with Landauer energy cost given infinite time or control complexity. However, such optimal protocols require complex unitaries generated by an external work source. Restricting to unitaries that can be run solely via a heat engine, we derive a novel Carnot-Landauer limit, along with protocols for its saturation. This generalizes Landauer's principle to a fully thermodynamic setting, leading to a unification with the third law and emphasizes the importance of control in quantum thermodynamics.
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