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We derive exact expressions for the fluctuation conductivity in two dimensional superconductors as a function of temperature and magnetic field in the whole fluctuation region above the upper critical field H_{c2}(T). Focusing on the…

超导电性 · 物理学 2011-08-19 A. Glatz , A. A. Varlamov , V. M. Vinokur

We investigate scattering phenomena in a one-dimensional attractive Bose-Hubbard model with a time-periodically modulated impurity. We analyze both single-particle and pair (doublon) transmission, exploring a range of interaction strengths…

量子气体 · 物理学 2025-11-24 Neda Ahmadi , Ameneh Sheikhan , Corinna Kollath

High moments of conserved quantities such as net-baryon, net-electric charge, and net-strangeness in heavy-ion collisions are sensitive to fluctuations caused by the QCD critical point (CP). The event-by-event analysis of high moments of…

核实验 · 物理学 2025-11-06 Xin Zhang , Yu Zhang , Xiaofeng Luo , Nu Xu

The simulation of strongly correlated electron systems remains a formidable challenge. Certain experimentally relevant dynamical response functions are especially difficult to calculate, due to issues of finite-size effects and the ill…

强关联电子 · 物理学 2026-03-25 Petar Brinić , Hugo U. R. Strand , Jakša Vučičević

Fluctuations of conserved quantities are sensitive observables to probe the signature of QCD phase transition and critical point in heavy-ion collisions. With the UrQMD model, we have studied the centrality and energy dependence of various…

核实验 · 物理学 2016-08-03 Ji Xu , Shili Yu , Feng Liu , Xiaofeng Luo

By means of an adapted mean-field expansion for large fillings $n\gg1$, we study the evolution of quantum fluctuations in the time-dependent Bose-Hubbard model, starting in the superfluid state and approaching the Mott phase by decreasing…

其他凝聚态物理 · 物理学 2008-04-15 Uwe R. Fischer , Ralf Schützhold , Michael Uhlmann

By event-driven molecular dynamics simulations we investigate magneto-transport in a two-dimensional model with randomly distributed scatterers close to the field-induced localization transition. This transition is generated by percolating…

介观与纳米尺度物理 · 物理学 2015-12-14 Walter Schirmacher , Benedikt Fuchs , Felix Höfling , Thomas Franosch

We review the extension of the factorization formalism of perturbative QCD to {\it coherent} soft rescattering associated with hard scattering in high energy nuclear collisions. We emphasize the ability to quantify high order corrections…

高能物理 - 唯象学 · 物理学 2009-01-07 Jian-Wei Qiu

Strong interaction with other particles or feedback from the medium on a Brownian particle entail memory effects in the effective dynamics. We discuss the extension of the fluctuation-dissipation theorem to nonequilibrium Langevin systems…

统计力学 · 物理学 2013-09-23 C. Maes , S. Safaverdi , P. Visco , F. van Wijland

We study the relation between the microscopic properties of a many-body system and the electron spectra, experimentally accessible by photoemission. In a recent paper [Phys. Rev. Lett. 114, 236402 (2015)], we introduced the "fluctuation…

强关联电子 · 物理学 2018-03-28 O. Gunnarsson , J. Merino , T. Schäfer , G. Sangiovanni , G. Rohringer , A. Toschi

Having established the fact that interacting classical kicked rotor systems exhibit long-lived prethermal phase with quasi-conserved average Hamiltonian before entering into chaotic heating regime, we use spatio-temporal fluctuation…

统计力学 · 物理学 2021-09-01 Aritra Kundu , Atanu Rajak , Tanay Nag

We study the conserved charge fluctuations, as quantified by the corresponding susceptibilities, in strongly interacting matter as motived by the quark-gluon plasma. Using the gauge-gravity correspondence approach, we study the patterns of…

高能物理 - 唯象学 · 物理学 2013-07-05 Shuzhe Shi , Jinfeng Liao

As a toy model for QED in strong background fields, we consider the impact of back-reaction and loop effects on scattering processes in quantum optics. We show that neglecting back-reaction misses qualitative and quantitative features of…

高能物理 - 唯象学 · 物理学 2020-04-08 Robin Ekman , Anton Ilderton

We introduce and study a new class of fronts in finite particle number reaction-diffusion systems, corresponding to propagating up a reaction rate gradient. We show that these systems have no traditional mean-field limit, as the nature of…

统计力学 · 物理学 2007-05-23 Elisheva Cohen , David A. Kessler , Herbert Levine

We study the interplay of strong correlations and coherent driving by considering the strong-coupling Kondo model driven by a time-periodic bias voltage. Combining a recent nonequilibrium renormalization group method with Floquet theory, we…

介观与纳米尺度物理 · 物理学 2022-10-03 Valentin Bruch , Mikhail Pletyukhov , Herbert Schoeller , Dante M. Kennes

We study drag dynamics of several fermions in a fermion cloud in one-dimensional continuous systems, with particular emphasis on the non-trivial quantum many-body effects in systems whose parameters change gradually in real time. We adopt…

量子气体 · 物理学 2015-08-12 Jun'ichi Ozaki , Masaki Tezuka , Norio Kawakami

The Poincar\'e recurrence theorem shows that conservative systems in a bounded region of phase space eventually return arbitrarily close to their initial state after a finite amount of time. An analogous behavior occurs in certain quantum…

量子物理 · 物理学 2026-04-22 Amit Anand , Dinesh Valluri , Jack Davis , Shohini Ghose

We show that there exist non-relativistic scattering experiments which, if successful, freeze out, speed up or even reverse the free dynamics of any ensemble of quantum systems present in the scattering region. This time translation effect…

量子物理 · 物理学 2020-12-16 David Trillo , Benjamin Dive , Miguel Navascues

Quantum cluster theories are a set of approaches for the theory of correlated and disordered lattice systems, which treat correlations within the cluster explicitly, and correlations at longer length scales either perturbatively or within a…

超导电性 · 物理学 2009-11-11 T. A. Maier , M. S. Jarrell , D. J. Scalapino

Following a recent work (briefly reviewed below) we consider temporal fluctuations in the reduced density matrix elements for a coupled system involving a pair of kicked rotors as also one made up of a pair of Harper Hamiltonians. These…

量子物理 · 物理学 2009-11-10 Sankhasubhra Nag , Gautam Ghosh , Avijit Lahiri