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相关论文: Towards a strong coupling theory for the KPZ equat…

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While the 1-point height distributions (HDs) and 2-point covariances of $(2+1)$ KPZ systems have been investigated in several recent works for flat and spherical geometries, for the cylindrical one the HD was analyzed for few models and…

统计力学 · 物理学 2023-06-29 Ismael S. S. Carrasco , Tiago J. Oliveira

We re-examine mode-coupling theory for the Kardar-Parisi-Zhang (KPZ) equation in the strong coupling limit and show that there exists two branches of solutions. One branch (or universality class) only exists for dimensionalities $d<d_c=2$…

统计力学 · 物理学 2009-11-11 L. Canet , M. A. Moore

In this article, we perform a careful analysis of the renormalization procedure used in existing calculations to derive critical exponents for the KPZ-equation at 2-loop order. This analysis explains the discrepancies between the results of…

凝聚态物理 · 物理学 2009-10-30 Kay Joerg Wiese

One-dimensional interacting particle systems, 1+1 random growth models, and two-dimensional directed polymers define 2d height fields. The KPZ universality conjecture posits that an appropriately scaled height function converges to a…

概率论 · 数学 2022-07-21 Jinho Baik

The Kardar-Parisi-Zhang (KPZ) equation describes a wide range of growth-like phenomena, with applications in physics, chemistry and biology. There are three central questions in the study of KPZ growth: the determination of height…

The Kardar-Parisi-Zhang (KPZ) equation in 1+1 dimension dynamically develops sharply connected valley structures within which the height derivative {\it is not} continuous. There are two different regimes before and after creation of the…

统计力学 · 物理学 2016-08-31 A. A. Masoudi , F. Shahbazi , J. Davoudi , M. Reza Rahimi Tabar

It has recently been proposed that fluctuating ``pulled'' fronts propagating into an unstable state should not be in the standard KPZ universality class for rough interface growth. We introduce an effective field equation for this class of…

统计力学 · 物理学 2009-11-07 Goutam Tripathy , Andrea Rocco , Jaume Casademunt , Wim van Saarloos

A strong-coupling expansion for the phase boundary of the (incompressible) Mott insulator is presented for the bose Hubbard model. Both the pure case and the disordered case are examined. Extrapolations of the series expansions provide…

凝聚态物理 · 物理学 2009-10-28 J. K. Freericks , H. Monien

It is shown that the mode-coupling equations for the strong-coupling limit of the KPZ equation have a solution for d>4 such that the dynamic exponent z is 2 (with possible logarithmic corrections) and that there is a delta function term in…

凝聚态物理 · 物理学 2009-10-22 M. A. Moore , T. Blum J. P. Doherty , M. Marsili , J-P. Bouchaud , P. Claudin

We examine height-height correlations in the transient growth regime of the 2+1 Kardar-Parisi-Zhang (KPZ) universality class, with a particular focus on the {\it spatial covariance} of the underlying two-point statistics, higher-dimensional…

统计力学 · 物理学 2014-03-31 T. Halpin-Healy , G. Palasantzas

The statistics of the fluctuations of quantum many-body systems are highly revealing of their nature. In driven-dissipative systems displaying macroscopic quantum coherence, as exciton polariton condensates under incoherent pumping, the…

Stochastic interface dynamics serve as mathematical models for diverse time-dependent physical phenomena: the evolution of boundaries between thermodynamic phases, crystal growth, random deposition... Interesting limits arise at large…

概率论 · 数学 2019-03-22 F. L. Toninelli

Our understanding of the one-dimensional KPZ equation, \textit{alias} noisy Burgers equation, has advanced substantially over the past five years. We provide a non-technical review, where we limit ourselves to the stochastic PDE and lattice…

数学物理 · 物理学 2015-06-24 Jeremy Quastel , Herbert Spohn

We determine the stationary two-point correlation function of the one-dimensional KPZ equation through the scaling limit of a solvable microscopic model, the polynuclear growth model. The equivalence to a directed polymer problem with…

统计力学 · 物理学 2007-05-23 Michael Praehofer , Herbert Spohn

We show that the multicomponent Kardar-Parisi-Zhang equation describes the low-energy theory for phase fluctuations in a $\mathbb{Z}_{2}$ degenerate non-equilibrium driven-dissipative condensate with global $U(1)\times U(1)$ symmetry. Using…

量子气体 · 物理学 2024-11-12 Harvey Weinberger , Paolo Comaron , Marzena H. Szymańska

Revealing universal behaviors is a hallmark of statistical physics. Phenomena such as the stochastic growth of crystalline surfaces, of interfaces in bacterial colonies, and spin transport in quantum magnets all belong to the same…

The strong coupling physics of two dimensional gravity at $C=7$, $13$, $19$ is summarized. It is based on a new set of local fields which do not preserve chirality. Thus this quantum number becomes ``deconfined'' in the strongly coupled…

高能物理 - 理论 · 物理学 2007-05-23 Jean-Loup GERVAIS

The KPZ fixed point is a 2d random field, conjectured to be the universal limiting fluctuation field for the height function of models in the KPZ universality class. Similarly, the periodic KPZ fixed point is a conjectured universal field…

概率论 · 数学 2023-05-03 Jinho Baik , Andrei Prokhorov , Guilherme L. F. Silva

Numerical simulations are essential tools for exploring the dynamic scaling properties of the nonlinear Kadar-Parisi-Zhang (KPZ) equation. Yet the inherent nonlinearity frequently causes numerical divergence within the strong-coupling…

计算物理 · 物理学 2023-12-25 Tianshu Song , Hui Xia

The Kardar-Parisi-Zhang (KPZ) equation defines the main universality class for nonlinear growth and roughening of surfaces. But under certain conditions, a conserved KPZ equation (cKPZ) is thought to set the universality class instead. This…

统计力学 · 物理学 2018-07-18 Fernando Caballero , Cesare Nardini , Frederic van Wijland , Michael E. Cates