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The establishment of the Wilson-Fisher fixed point (WFP) for $O(n)$ spin models in $d=4-\epsilon$ dimensions stands as a cornerstone of the renormalization group (RG) theory for critical phenomena. However, when long-range (LR)…

统计力学 · 物理学 2026-03-20 Zhiyi Li , Kun Chen , Youjin Deng

The phase structure of a higher derivative sine-Gordon model in four dimensions is analysed. It is shown that the inclusion of a relevant two-derivative term in the action significantly modifies some of the results obtained by neglecting…

高能物理 - 理论 · 物理学 2024-12-03 Matteo F. Bontorno , G. G. N. Angilella , Dario Zappala

Applications of a method recently suggested by one of the authors (R.L.) are presented. This method is based on the use of dimensional recurrence relations and analytic properties of Feynman integrals as functions of the parameter of…

高能物理 - 唯象学 · 物理学 2015-03-17 Roman N. Lee , Alexander V. Smirnov , Vladimir A. Smirnov

The off-equilibrium purely dissipative dynamics (Model A) of the O(N) vector model is considered at criticality in an $\epsilon = 4- d > 0$ up to O($\epsilon^2$). The scaling behavior of two-time response and correlation functions at zero…

统计力学 · 物理学 2011-07-19 Pasquale Calabrese , Andrea Gambassi

Dimensional Reduction is applied to \qcd{} in order to compute various renormalization constants in the \drbar{} scheme at higher orders in perturbation theory. In particular, the $\beta$ function and the anomalous dimension of the quark…

高能物理 - 唯象学 · 物理学 2009-11-11 R. Harlander , P. Kant , L. Mihaila , M. Steinhauser

We study a variation of the dynamic universality class of model H in a spatial dimension of $d=4-\epsilon$, by frustrating charge diffusion and momentum density fluctuations along $d_T=1$ or $d_T=2$ dimensions, while keeping the same…

高能物理 - 唯象学 · 物理学 2018-01-17 Ho-Ung Yee

We consider the critical relaxation of the Ising model, the so-called model A, and study its operator product expansion. Within perturbation theory, we focus on the operator product expansions of the two-point function and the response…

统计力学 · 物理学 2025-02-17 Carlo Pagani , Janik Sobieray

We investigate the component sizes of the critical configuration model, as well as the related problem of critical percolation on a supercritical configuration model. We show that, at criticality, the finite third moment assumption on the…

We study an asymptotic expansion of the critical point for the nearest-neighbor oriented percolation on $\mathbb Z^d$ in powers of $d^{-1}$ as $d\rightarrow \infty$. The proof relies heavily on the lace expansion.

概率论 · 数学 2025-08-19 Noe Kawamoto

In this paper we study the notion of critical dimension of random simplicial complexes in the general multi-parameter model described in our previous papers of this series. This model includes as special cases the Linial-Meshulam-Wallach…

代数拓扑 · 数学 2015-12-31 A. Costa , M. Farber

The level spacing distribution is numerically calculated at the disorder-induced metal--insulator transition for dimensionality d=4 by applying the Lanczos diagonalisation. The critical level statistics are shown to deviate stronger from…

无序系统与神经网络 · 物理学 2017-09-27 I. Kh. Zharekeshev , B. Kramer

In a recent publication we have investigated the spectrum of anomalous dimensions for arbitrary composite operators in the critical N-vector model in 4-epsilon dimensions. We could establish properties like upper and lower bounds for the…

高能物理 - 理论 · 物理学 2009-10-28 Stefan K. Kehrein , Franz Wegner

The critical dynamics of classical 3D Heisenberg model and complex model of the real antiferromagnetic Cr2O3 is investigated with use of the method of molecular dynamics. The dynamic critical exponent z are determined for these models on…

统计力学 · 物理学 2013-02-11 A. K. Murtazaev , V. A. Mutailamov

Short-time dynamics in the $2D$ Blume-Capel model, with a non-conserved order-parameter and short-ranged interactions, is analysed. For non-equilibrium dynamics, both at a critical point in the $2D$ Ising universality class and at the…

统计力学 · 物理学 2026-03-16 Leila Moueddene , Malte Henkel

The Anderson transitions in a random magnetic field in three dimensions are investigated numerically. The critical behavior near the transition point is analyzed in detail by means of the transfer matrix method with high accuracy for…

无序系统与神经网络 · 物理学 2017-09-27 T. Kawarabayashi , B. Kramer , T. Ohtsuki

We develop a parameter-free model for the fragmentation of drops colliding off-center. The prediction is excellent over a wide range of liquid properties. The so-called stretching separation is attributed to the extension of the merged drop…

流体动力学 · 物理学 2023-06-22 David Baumgartner , Günter Brenn , Carole Planchette

We consider the static and dynamic phases in a Rosenzweig-Porter (RP) random matrix ensemble with the tailed distribution of off-diagonal matrix elements of the form of the large-deviation ansatz. We present a general theory of survival…

无序系统与神经网络 · 物理学 2021-09-01 I. M. Khaymovich , V. E. Kravtsov

We employ the relative category to develop relations between the Wa\.zewski pair $(N,E)$ and the Morse decomposition of the maximal invariant set in $\ol{N\sm E}$ for infinite-dimensional dynamical systems. Via these relations, we can…

动力系统 · 数学 2021-02-23 Jintao Wang , Desheng Li

We present a detailed study of the finite momentum dynamics of the $O(4)$ critical point of QCD, which lies in the dynamic universality class of Model G. The critical scaling of the model is analyzed in multiple dynamical channels. For…

高能物理 - 格点 · 物理学 2023-07-18 Adrien Florio , Eduardo Grossi , Derek Teaney

Recently we conjectured the four-point amplitude of graviton multiplets in ${\rm AdS}_5 \times {\rm S}^5$ at one loop by exploiting the operator product expansion of $\mathcal{N}=4$ super Yang-Mills theory. Here we give the first extension…

高能物理 - 理论 · 物理学 2018-06-13 F. Aprile , J. M. Drummond , P. Heslop , H. Paul