Results 11 to 20 of about 95 (95)
Jamming as a Multicritical Point [PDF]
Physical Review Letters, 2019 Main text: 5 pages, 3 figures; SI text: 10 pages, 9 ...
Liarte, Danilo B. +3 more
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Multicritical hypercubic models [PDF]
Journal of High Energy Physics, 2021 Abstract We study renormalization group multicritical fixed points in the ϵ-expansion of scalar field theories characterized by the symmetry of the (hyper)cubic point group HN. After reviewing the algebra of HN-invariant polynomials and arguing that there can be an entire family of multicritical (hyper)cubic solutions with ϕ2n ...
R. Ben Alì Zinati +2 more
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THE MULTICRITICAL KONTSEVICH-PENNER MODEL [PDF]
Modern Physics Letters A, 1992 We consider the Hermitian matrix model with an external field entering the quadratic term tr (ΛXΛX) and Penner-like interaction term αN( log (1+X)-X). An explicit solution in the leading order in N is presented. The critical behavior is given by the second derivative of the free energy in α which appears to be a pure logarithm, that is a feature of c ...
Chekhov, L., Makeenko, Yu.
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Colossal Magnetoresistance in Manganites as a Multicritical Phenomenon [PDF]
Physical Review Letters, 2003 The colossal magnetoresistance in manganites AMnO_3 is studied from the viewpoint of multicritical phenomena. To understand the complicated interplay of various phases, we study the Ginzburg-Landau theory in terms of both the mean-field approximation and the renormalization-group analysis to compare with the observed phase diagram.
Murakami, Shuichi, Nagaosa, Naoto
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Multicritical scaling in a lattice model of vesicles [PDF]
Journal of Physics A: Mathematical and Theoretical, 2020 Abstract Vesicles, or closed fluctuating membranes, have been modelled in two dimensions by self-avoiding polygons, weighted with respect to their perimeter and enclosed area, with the simplest model given by area-weighted excursions (Dyck paths).
N Haug, T Prellberg
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Multicritical Fermi Surface Topological Transitions [PDF]
Physical Review Letters, 2019 A wide variety of complex phases in quantum materials are driven by electron-electron interactions, which are enhanced through density of states peaks. A well known example occurs at van Hove singularities where the Fermi surface undergoes a topological transition.
Dmitry V. Efremov +5 more
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Multicritical Landau-Potts field theory [PDF]
Physical Review D, 2020 We investigate a perturbatively renormalizable $S_{q}$ invariant model with $N=q-1$ scalar field components below the upper critical dimension $d_c=\frac{10}{3}$. Our results hint at the existence of multicritical generalizations of the critical models of spanning random clusters and percolations in three dimensions.
A. Codello +3 more
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New multicritical matrix models and multicritical 2d CDT
Physics Letters B, 2012 We define multicritical CDT models of 2d quantum gravity and show that they are a special case of multicritical generalized CDT models obtained from the new scaling limit, the so-called "classical" scaling limit, of matrix models. The multicritical behavior agrees with the multicritical behavior of the so-called branched polymers.
Ambjørn, Jan +3 more
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Multicritical point with infinite fractal symmetries
Physical Review B, 2022 Recently a ``Pascal's triangle model" constructed with $\text{U}(1)$ rotor degrees of freedom was introduced, and it was shown that ($\textit{i}$.) this model possesses an infinite series of fractal symmetries; and ($\textit{ii}$.) it is the parent model of a series of $Z_p$ fractal models each with its own distinct fractal symmetry.
Nayan Myerson-Jain +2 more
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Dissipation-Induced Anomalous Multicritical Phenomena [PDF]
Physical Review Letters, 2018 10 pages, 4 figures, main draft plus supplementary material, published ...
Soriente M +3 more
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