Zobrazeno 1 - 10
of 6 825
pro vyhledávání: '"O(N) Model"'
We initiate the study of extended excitations in the long-range O(N) model. We focus on line and surface defects and we discuss the challenges of a naive generalization of the simplest defects in the short-range model. To face these challenges we pro
Externí odkaz:
http://arxiv.org/abs/2412.08697
Autor:
Ikeda, Harukuni, Nakano, Hiroyoshi
We study the critical behavior of the $O(n)$ model under steady shear flow using a dynamical renormalization group (RG) method. Incorporating the strong anisotropy in scaling ansatz, which has been neglected in earlier RG analyses, we identify a new
Externí odkaz:
http://arxiv.org/abs/2412.02111
Recent advances in boundary critical phenomena have led to the discovery of a new surface universality class in the three-dimensional $O(N)$ model. The newly found "extraordinary-log" phase can be realized on a two-dimensional surface for $N< N_c$, w
Externí odkaz:
http://arxiv.org/abs/2411.05089
We propose a numerical method to estimate one-point functions and the free-energy density of conformal field theories at finite temperature by solving the Kubo-Martin-Schwinger condition for the two-point functions of identical scalars. We apply the
Externí odkaz:
http://arxiv.org/abs/2411.00978
Autor:
Weller, Ryan, Su, Chun-Wei
The theory of an independent Higgs field is given by an $\textrm{O}(N)$ model with an $N$-component scalar $\vec{\phi}$ and a quartic $\lambda(\vec{\phi}\cdot\vec{\phi})^2$ potential when $N=4$. The phase structure of the theory can be studied analyt
Externí odkaz:
http://arxiv.org/abs/2410.01232
We compute the next-to-leading correction to the scaling dimension of large-charge operators in the $3d$ critical $O(N)$ model in a double scaling limit in which both $N$ and the operator charge $Q$ are taken to be large. When $Q \gg N$ our result ma
Externí odkaz:
http://arxiv.org/abs/2409.06781
Autor:
Aru, Juhan, Korzhenkova, Aleksandra
We revisit the relation between the spherical model of Berlin-Kac and the spin $O(N)$ model in the limit $N \to \infty$ and explain how they are related via the discrete Gaussian free field (GFF). More precisely, using probabilistic limit theorems an
Externí odkaz:
http://arxiv.org/abs/2405.04501
Autor:
Winstel, Marc, Valgushev, Semeon
In this talk, we study a scalar $O(N)$ model with a so-called moat regime -- a regime with negative bosonic wave function renormalization -- using lattice field theory. For negative bare wave function renormalization, inhomogeneous condensates are so
Externí odkaz:
http://arxiv.org/abs/2403.18640
Autor:
Okuyama, Yoshitaka
In this thesis, we explore the critical phenomena in the presence of extended objects, which we call defects, aiming for a better understanding of the properties of non-local objects ubiquitous in our world and a more practical and realistic study of
Externí odkaz:
http://arxiv.org/abs/2401.15336
Publikováno v:
JHEP 02 (2024) 078
In this paper we consider classical and quantum versions of the critical long-range $O(N)$ model, for which we study finite-size and finite-temperature effects, respectively, at large $N$. First, we consider the classical (isotropic) model, which is
Externí odkaz:
http://arxiv.org/abs/2311.04607