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相关论文: On the anomalous superfluid hydrodynamics

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A variational principle is further developed for out of equilibrium dynamical systems by using the concept of maximum entropy. With this new formulation it is obtained a set of two first-order differential equations, revealing the same…

数据分析、统计与概率 · 物理学 2019-03-22 Mario J. Pinheiro

For configurational changes of soft matter systems affected or caused by external hydrodynamic flow, we identify applied work, exchanged heat, and entropy change on the level of a single trajectory. These expressions guarantee invariance of…

软凝聚态物质 · 物理学 2009-01-15 Thomas Speck , Jakob Mehl , Udo Seifert

Large scale features of a randomly isotropically forced incompressible and unbounded rotating fluid are examined in perturbation theory. At first order in both the random force amplitude and the angular velocity we find two types of…

流体动力学 · 物理学 2009-11-10 Jose Gaite , David Hochberg , Carmen Molina-Paris

We revisit 't Hooft anomalies in (1+1)$d$ non-spin quantum field theory, starting from the consistency and locality conditions, and find that consistent U(1) and gravitational anomalies cannot always be canceled by properly quantized…

高能物理 - 理论 · 物理学 2022-10-25 Chi-Ming Chang , Ying-Hsuan Lin

We present a formalism for Newtonian multi-fluid hydrodynamics derived from an unconstrained variational principle. This approach provides a natural way of obtaining the general equations of motion for a wide range of hydrodynamic systems…

流体动力学 · 物理学 2009-11-07 Reinhard Prix

In this thesis we investigate the instabilities of superfluids at finite superflow by means of a hydrodynamical approach. We find that at a finite value of the background superfluid velocity a hydrodynamic collective mode crosses to the…

高能物理 - 理论 · 物理学 2024-01-10 Filippo Sottovia

Origin of hydrodynamical instability and turbulence in the Keplerian accretion disc as well as similar laboratory shear flows, e.g. plane Couette flow, is a long standing puzzle. These flows are linearly stable. Here we explore the…

高能天体物理现象 · 物理学 2020-07-01 Subham Ghosh , Banibrata Mukhopadhyay

Hydrodynamic instabilities driven by a direct current are analyzed in 2D and 3D relativisticlike systems with the Dyakonov-Shur boundary conditions supplemented by a boundary condition for temperature. Besides the conventional Dyakonov-Shur…

介观与纳米尺度物理 · 物理学 2021-10-25 P. O. Sukhachov , E. V. Gorbar , I. A. Shovkovy

The force on a probe induced by a nonequilibrium medium is in general nongradient. We detail the mechanism of that feature via nonequilibrium response theory. The emergence of nongradient forces is due to a systematic "twist" of the excess…

统计力学 · 物理学 2020-05-28 Christian Maes , Karel Netočný

We investigate the low-energy dynamics of systems with pseudo-spontaneously broken $U(1)$ symmetry and Goldstone phase relaxation. We construct a hydrodynamic framework which is able to capture these, in principle independent, effects. We…

高能物理 - 理论 · 物理学 2022-03-07 Martin Ammon , Daniel Arean , Matteo Baggioli , Seán Gray , Sebastian Grieninger

The equations of anomalous magnetohydrodynamics describe an Abelian plasma where conduction and chiral currents are simultaneously present and constrained by the second law of thermodynamics. At high frequencies the magnetic currents play…

高能物理 - 理论 · 物理学 2016-05-25 Massimo Giovannini

Variational principles for magnetohydrodynamics were introduced by previous authors both in Lagrangian and Eulerian form. In previous works [1] Yahalom & Lynden-Bell and later Yahalom [2] introduced a simpler Eulerian variational principle…

等离子体物理 · 物理学 2010-05-24 Asher Yahalom

Anisotropic hydrodynamics is a reorganization of the relativistic hydrodynamics expansion, with the leading order already containing substantial momentum-space anisotropies. The latter are a cause of concern in the traditional viscous…

高能物理 - 唯象学 · 物理学 2015-06-11 Leonardo Tinti

We use the AdS/CFT correspondence to study first-order relativistic viscous magneto-hydrodynamics of (2+1) dimensional conformal magnetic fluids. It is shown that the first order magneto-hydrodynamics constructed following Landau and…

高能物理 - 理论 · 物理学 2009-11-19 Evgeny I. Buchbinder , Alex Buchel

We show that in (anomalous) U(1) gauge theories with the Fayet-Iliopoulos (FI) term and with generic interactions there are meta-stable vacua in which supersymmetry (SUSY) is spontaneously broken even without U(1)_R symmetry and various…

高能物理 - 唯象学 · 物理学 2010-04-15 S. -G. Kim , N. Maekawa , H. Nishino , K. Sakurai

We develop a hydrodynamic effective field theory on the Schwinger-Keldysh contour for fluids with charge, energy, and momentum conservation, but only discrete rotational symmetry. The consequences of anisotropy on thermodynamics and…

高能物理 - 理论 · 物理学 2022-03-16 Xiaoyang Huang , Andrew Lucas

Regarding a recent dispute about the symmetry of the stress tensor of fluids, more considerations are presented. The usual proofs of this symmetry are reviewed, and contradictions between this symmetry and the mechanism of gas viscosity are…

流体动力学 · 物理学 2024-08-02 Ji Luo

Following up on recent work in the context of ordinary fluids, we study the equilibrium partition function of a 3+1 dimensional superfluid on an arbitrary stationary background spacetime, and with arbitrary stationary background gauge…

高能物理 - 理论 · 物理学 2015-06-05 Sayantani Bhattacharyya , Sachin Jain , Shiraz Minwalla , Tarun Sharma

Following earlier work, reference is made to the classical entropic force which results from spatially variable disorder, an exclusively repulsive force. In terms of macroscopic variables it is applied to magnetohydrodynamics, causing minor…

空间物理 · 物理学 2023-05-16 W. Baumjohann , R. A. Treumann

Using fluid/gravity correspondence, we determine the (linearized) stress energy tensor of $\mathcal{N}=4$ super-Yang-Mills theory at strong coupling with all orders in derivatives of fluid velocity included. We find that the dissipative…

高能物理 - 理论 · 物理学 2014-11-04 Yanyan Bu , Michael Lublinsky