Results 51 to 60 of about 2,455,001 (344)

Ising model on the affine plane

open access: yesPhysical Review D, 2023
We demonstrate that the Ising model on a general triangular graph with 3 distinct couplings $K_1,K_2,K_3$ corresponds to an affine transformed conformal field theory (CFT). Full conformal invariance of the $c= 1/2$ minimal CFT is restored by introducing a metric on the lattice through the map $\sinh(2K_i) = \ell^*_i/ \ell_i$ which relates critical ...
Richard C. Brower, Evan K. Owen
openaire   +2 more sources

Top-down Transformation Choice [PDF]

open access: yesStatistical Modelling 2018, 2017
Simple models are preferred over complex models, but over-simplistic models could lead to erroneous interpretations. The classical approach is to start with a simple model, whose shortcomings are assessed in residual-based model diagnostics. Eventually, one increases the complexity of this initial overly simple model and obtains a better-fitting model.
arxiv   +1 more source

Grassmannization of the 3D Ising Model [PDF]

open access: yes11th Italian Quantum Information Science conference (IQIS2018), 2019
The Ising model is a reference model for applications in quantum computing, and is often used as a benchmark for numerical simulations. Classical Monte Carlo (MC) simulations are carried out only for finite-size lattices, and the result is generalized to the infinite-size lattice by data collapse.
E. Martello, G. Angilella, L. Pollet
openaire   +3 more sources

Ernst Ising - physicist and teacher

open access: yes, 1996
The Ising model is one of the standard models in statistical physics. Since 1969 more than 12000 publications appeared using this model. In 1996 Ernst Ising celebrated his 96th birthday.
Kobe, S.
core   +2 more sources

A large‐scale retrospective study in metastatic breast cancer patients using circulating tumour DNA and machine learning to predict treatment outcome and progression‐free survival

open access: yesMolecular Oncology, EarlyView.
There is an unmet need in metastatic breast cancer patients to monitor therapy response in real time. In this study, we show how a noninvasive and affordable strategy based on sequencing of plasma samples with longitudinal tracking of tumour fraction paired with a statistical model provides valuable information on treatment response in advance of the ...
Emma J. Beddowes   +20 more
wiley   +1 more source

Non Proportional Odds Models are Widely Dispensable -- Sparser Modeling based on Parametric and Additive Location-Shift Approaches [PDF]

open access: yesarXiv, 2020
The potential of location-shift models to find adequate models between the proportional odds model and the non-proportional odds model is investigated. It is demonstrated that these models are very useful in ordinal modeling. While proportional odds models are often too simple, non proportional odds models are typically unnecessary complicated and seem
arxiv  

A Spin - 3/2 Ising Model on a Square Lattice [PDF]

open access: yes, 1996
The spin - 3/2 Ising model on a square lattice is investigated. It is shown that this model is reducible to an eight - vertex model on a surface in the parameter space spanned by coupling constants J, K, L and M. It is shown that this model is equivalent to an exactly solvable free fermion model along two lines in the parameter space.
arxiv   +1 more source

Energy trapped Ising model [PDF]

open access: yesPhysical Review D, 2020
In this paper we have considered the 3D Ising model perturbed with the energy operator coupled with a non uniform harmonic potential acting as a trap, showing that this system satisfies the trap-size scaling behavior. Eventually, we have computed the correlators $\langle (z) (0)\rangle$, $ \langle (z) (0)\rangle$ and $\langle (z) (0)\rangle$
Amoretti A.   +3 more
openaire   +4 more sources

Exact correlation functions of Bethe lattice spin models in external fields

open access: yes, 1999
We develop a transfer matrix method to compute exactly the spin-spin correlation functions of Bethe lattice spin models in the external magnetic field h and for any temperature T.
A. D. Mirlin   +43 more
core   +2 more sources

The impact of frailty syndrome on skeletal muscle histology: preventive effects of exercise

open access: yesFEBS Open Bio, EarlyView.
Frailty syndrome exacerbates skeletal muscle degeneration via increased ECM deposition and myofiber loss. This study, using a murine model, demonstrates that endurance exercise attenuates these histopathological alterations, preserving muscle integrity. Findings support exercise as a viable strategy to counteract frailty‐induced musculoskeletal decline
Fujue Ji   +3 more
wiley   +1 more source

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