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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)…

Statistical Mechanics · Physics 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…

High Energy Physics - Theory · Physics 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…

High Energy Physics - Phenomenology · Physics 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…

Statistical Mechanics · Physics 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…

High Energy Physics - Phenomenology · Physics 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…

High Energy Physics - Phenomenology · Physics 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…

Statistical Mechanics · Physics 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…

Probability · Mathematics 2017-02-16 Souvik Dhara , Remco van der Hofstad , Johan S. H. van Leeuwaarden , Sanchayan Sen

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.

Probability · Mathematics 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…

Algebraic Topology · Mathematics 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…

Disordered Systems and Neural Networks · Physics 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…

High Energy Physics - Theory · Physics 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…

Statistical Mechanics · Physics 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…

Statistical Mechanics · Physics 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…

Disordered Systems and Neural Networks · Physics 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…

Fluid Dynamics · Physics 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…

Disordered Systems and Neural Networks · Physics 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…

Dynamical Systems · Mathematics 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…

High Energy Physics - Lattice · Physics 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…

High Energy Physics - Theory · Physics 2018-06-13 F. Aprile , J. M. Drummond , P. Heslop , H. Paul