Dr. Marcus BluhmAssociate professor at Institute of Theoretical Physics |
Institute of Theoretical Physics pl. M. Borna 9 50-204 Wrocław Poland |
Phone: +48 71 375 9354
e-mail: marcus.bluhm@ift.uni.wroc.pl Office: 435 |
My current work is funded by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 665778 via the Narodowe Centrum Nauki (National Science Center, Poland) within the Polonez fellowship UMO-2016/21/P/ST2/04035 "Properties of strongly coupled quantum fluids". The scientific goals of the project can be found in my research proposal. |
flow data, is found in the normal phase just above the transition temperature to superfluidity (see the red curve with band in the figure). It can be as small as 0.5 in natural units, thus being comparable with the hottest matter created on earth, the Quark-Gluon Plasma. Both these strongly coupled quantum systems constitute the most perfect fluids that we know. |
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from purely Gaussian white noise observable non-Gaussian cumulants can be generated. This is demonstrated for the case of the purely diffusive dynamics of critical mode fluctuations near the QCD critical point in a rapidly evolving medium. Without non-linear interactions non-Gaussian cumulants such as the kurtosis remain zero (see red squares in the figures), while for the fully non-linear dynamics a pronounced temperature dependence in the kurtosis develops (see blue points in the left figure). Finite-size and finite-time effects lead to retardation and non-equilibrium effects (see right figure, shift to later times and less pronounced minimum), and a critical scaling behavior different from thermodynamic expectations is observed. |
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toward equilibrium dominated measurements of fluctuation observables in heavy-ion collisions. The time-evolution of critical mode fluctuations was studied in a QCD-assisted transport approach based on non-equilibrium chiral fluid dynamics and the effective action of low-energy QCD, taking the non-perturbative nature of QCD near the phase transition into account. From this equilibration time study the phase boundary and the region near the QCD critical point can clearly be identified (see blue vs. non-blue regions in the figure). The moderate increase near the critical point (red area) - the equilibration times remain smaller than 1 fm/c - suggests that phenomena associated with critical slowing down might be less pronounced than previously expected. |
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In the fall semester of 2017, I gave a monographic lecture related to my project about the physics of "Ultracold Fermi gases". It was intended for Ph.D. students at the University of Wrocław with the following syllabus. The problems tasks for each of the lectures can be found here: Problem tasks - Session 1 Problem tasks - Session 2 Problem tasks - Session 3 Problem tasks - Session 4 |