Results 41 to 50 of about 14,608,655 (298)
Gaps in the Heisenberg-Ising model [PDF]
Physical Review B, 1995 We report on the closing of gaps in the ground state of the critical Heisenberg-Ising chain at momentum $π$. For half-filling, the gap closes at special values of the anisotropy $Δ= \cos(π/Q)$, $Q$ integer. We explain this behavior with the help of the Bethe Ansatz and show that the gap scales as a power of the system size with variable exponent ...
Roemer, R. A. +2 more
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Static universality of the Ising and Blume–Capel models on two-dimensional Penrose tiles
Results in Physics, 2023 We study the phase transitions and the critical behavior of the Ising and Blume–Capel models on two kinds of two-dimensional Penrose tiles employing Monte Carlo methods and detailed finite-size scaling analysis.
Mouhcine Azhari, Unjong Yu
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Bernoulli, 2018 The Ising spin glass is a one-parameter exponential family model for binary data with quadratic sufficient statistic. In this paper, we show that given a single realization from this model, the maximum pseudolikelihood estimate (MPLE) of the natural parameter is $\sqrt {a_N}$-consistent at a point whenever the log-partition function has order $a_N$ in ...
Bhattacharya, Bhaswar B. +1 more
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Physical Review LettersSystems with nonreciprocal interactions generically display time-dependent states. These are routinely observed in finite systems, from neuroscience to active matter, in which globally ordered oscillations exist. However, the stability of these uniform nonreciprocal phases in noisy spatially-extended systems, their fate in the thermodynamic limit, and ...
Avni, Yael +4 more
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Global quantum correlations in finite-size spin chains
New Journal of Physics, 2013 We perform an extensive study of the properties of global quantum correlations in finite-size one-dimensional quantum spin models at finite temperature. By adopting a recently proposed measure for global quantum correlations (Rulli and Sarandy 2011 Phys.
S Campbell +6 more
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Mathematics, 2021 A method of the Riemann–Hilbert problem is applied for Zhang’s conjecture 1 proposed in Philo. Mag. 87 (2007) 5309 for a ferromagnetic three-dimensional (3D) Ising model in the zero external field and the solution to the Zhang’s conjecture 1 is ...
Osamu Suzuki, Zhidong Zhang
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Cell death and survival due to cytotoxic exposure modelled as a two-state Ising system [PDF]
Royal Society Open Science, 2020 Cancer chemotherapy agents are assessed for their therapeutic utility primarily by their ability to cause apoptosis of cancer cells and their potency is given by an IC50 value.
S. Arbabi Moghadam +2 more
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Constrained percolation, Ising model, and XOR Ising model on planar lattices
Random Structures & Algorithms, 2020 We study site percolation models on planar lattices including the [m,4,n,4] lattice and the square tilings on the Euclidean plane () or the hyperbolic plane (), satisfying certain local constraints on degree‐4 faces. These models are closely related to Ising models and XOR Ising models (product of two i.i.d Ising models) on regular tilings of or .
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Ising’s Roots and the Transfer-Matrix Eigenvalues
EntropyToday, the Ising model is an archetype describing collective ordering processes. As such, it is widely known in physics and far beyond. Less known is the fact that the thesis defended by Ernst Ising 100 years ago (in 1924) contained not only the solution
Reinhard Folk, Yurij Holovatch
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Finite-size scaling of the majority-voter model above the upper critical dimension
Condensed Matter Physics, 2023 The majority-voter model is studied by Monte Carlo simulations on hypercubic lattices of dimension d = 2 to 7 with periodic boundary conditions. The critical exponents associated to the finite-size scaling of the magnetic susceptibility are shown to be ...
C. Chatelain
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