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Noting that two-dimensional magnetohydrodynamics can be modeled by conformal field theory, we argue that when the Alf'ven effect is also taken into account one is naturally lead to consider conformal field theories, which have logarithmic…

High Energy Physics - Theory · Physics 2008-02-03 M. R. Rahimi Tabar , S. Rouhani

A new conformal field theory description of two-dimensional turbulence is proposed. The recently established class of rational logarithmic conformal field theories provides a unique candidate solution which resolves many of the drawbacks of…

High Energy Physics - Theory · Physics 2009-10-30 Michael Flohr

We consider the application of logarithmic conformal field theory in finding solutions to the turbulent phases of 2-dimensional models of magnetohydrodynamics. These arise upon dimensional reduction of standard (infinite conductivity)…

Condensed Matter · Physics 2009-10-31 Spyros Skoulakis , Steven Thomas

We consider logarithmic conformal field theories near a boundary and derive the general form of one and two point functions. We obtain results for arbitrary and two dimensions. Application to two dimensional magnetohydrodynamics is…

High Energy Physics - Theory · Physics 2007-05-23 S. Moghimi-Araghi , S. Rouhani

We show that an infinite number of non-unitary minimal models may describe two dimensional turbulent magnetohydrodynamics (MHD), both in the presence and absence of the Alf'ven effect. We argue that the existence of a critical dynamical…

High Energy Physics - Theory · Physics 2016-09-06 M. R. Rahimitabar , S. Rouhani

The local logarithmic conformal field theory corresponding to the triplet algebra at c=-2 is constructed. The constraints of locality and crossing symmetry are explored in detail, and a consistent set of amplitudes is found. The spectrum of…

High Energy Physics - Theory · Physics 2011-09-29 Matthias R. Gaberdiel , Horst G. Kausch

We consider the correlation functions of two-dimensional turbulence in the presence and absence of a three-dimensional perturbation, by means of conformal field theory. In the persence of three dimensional perturbation, we show that in the…

High Energy Physics - Theory · Physics 2015-06-26 M. R. Rahimi Tabar , S. Rouhani

We study logarithmic conformal field theories (LCFTs) through the introduction of nilpotent conformal weights. Using this device, we derive the properties of LCFT's such as the transformation laws, singular vectors and the structure of…

High Energy Physics - Theory · Physics 2016-09-06 S. Moghimi-Araghi , S. Rouhani , M. Saadat

We study the correlation functions of logarithmic conformal field theories. First, assuming conformal invariance, we explicitly calculate two-- and three-- point functions. This calculation is done for the general case of more than one…

High Energy Physics - Theory · Physics 2015-06-26 M. R. Rahimi Tabar , A. Aghamohammadi , M. Khorrami

The periods of arbitrary abelian forms on hyperelliptic Riemann surfaces, in particular the periods of the meromorphic Seiberg-Witten differential, are shown to be in one-to-one correspondence with the conformal blocks of correlation…

High Energy Physics - Theory · Physics 2009-10-31 Michael A. I. Flohr

We describe an approach to logarithmic conformal field theories as limits of sequences of ordinary conformal field theories with varying central charge c. Logarithmic behaviour arises from degeneracies in the spectrum of scaling dimensions…

Statistical Mechanics · Physics 2013-11-25 John Cardy

We describe conformal field theories, correlation functions of which satisfy equations of the two-dimensional fluid mechanics. Prediction for the energy spectrum is given, $E(k) \sim k^{-25/7}$.

High Energy Physics - Theory · Physics 2007-05-23 A. Polyakov

We construct logarithmic conformal field theories starting from an ordinary conformal field theory -- with a chiral algebra C and the corresponding space of states V -- via a two-step construction: i) deforming the chiral algebra…

High Energy Physics - Theory · Physics 2009-11-07 J. Fjelstad , J. Fuchs , S. Hwang , A. M. Semikhatov , I. Yu. Tipunin

We study holographic entanglement entropy for certain logarithmic conformal field theories by making use of their gravity descriptions. The corresponding gravity descriptions are provided by higher derivative gravity at critical points…

High Energy Physics - Theory · Physics 2014-05-14 Mohsen Alishahiha , Amin Faraji Astaneh , M. Reza Mohammadi Mozaffar

We construct examples of smooth periodic solutions to the Magnetohydrodynamic equations in dimension 2 with positive resistivity for which the topology of the magnetic lines changes under the flow. By Alfv\'en's theorem this is known to be…

Analysis of PDEs · Mathematics 2024-10-10 Gennaro Ciampa

Logarithmic conformal field theories are based on vertex algebras with non-semisimple representation categories. While examples of such theories have been known for more than 25 years, some crucial aspects of local logarithmic CFTs have…

High Energy Physics - Theory · Physics 2021-07-28 Jürgen Fuchs , Christoph Schweigert

We propose a general frame work for deriving the OPEs within a logarithmic conformal field theory (LCFT). This naturally leads to the emergence of a logarithmic partner of the energy momentum tensor within an LCFT, and implies that the…

High Energy Physics - Theory · Physics 2007-05-23 S. Moghimi-Araghi , S. Rouhani , M. Saadat

The main result of this paper is the construction of a conformally covariant operator in two dimensions acting on scalar fields and containing fourth order derivatives. In this way it is possible to derive a class of Lagrangians invariant…

High Energy Physics - Theory · Physics 2009-10-28 Franco Ferrari

We consider possible conformal field theory (CFT) descriptions of the various inertial ranges that exist in $2d$ duality invariant Magnetohydrodynamics. Such models arise as effective theories of dyonic plasmas in 3 dimensions in which all…

High Energy Physics - Theory · Physics 2009-10-30 O. Coceal , W. A. Sabra , S. Thomas

We argue that the celestial conformal field theory exhibits patterns of a logarithmic conformal field theory. We uncover a Jordan block structure involving the celestial stress tensor and its logarithmic partner, a composite operator built…

High Energy Physics - Theory · Physics 2024-01-26 Adrien Fiorucci , Daniel Grumiller , Romain Ruzziconi
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