Results 41 to 50 of about 155,582 (340)

Effective low-energy description of almost Ising-Heisenberg diamond chain

open access: yes, 2015
We consider a geometrically frustrated spin-1/2 Ising-Heisenberg diamond chain, which is an exactly solvable model when assuming part of the exchange interactions as Heisenberg ones and another part as Ising ones.
Derzhko, Oleg   +3 more
core   +1 more source

Nonreciprocal Ising Model

open access: yesPhysical Review Letters
Systems 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 ...
Yael Avni   +4 more
openaire   +3 more sources

Tricritical Ising model with a boundary [PDF]

open access: yesNuclear Physics B, 1998
We study the integrable and supersymmetric massive $\hat _{(1,3)}$ deformation of the tricritical Ising model in the presence of a boundary. We use constraints from supersymmetry in order to compute the exact boundary $S$-matrices, which turn out to depend explicitly on the topological charge of the supersymmetry algebra.
A. De Martino   +2 more
openaire   +3 more sources

TwoDimensional IsingModel ApplicationWith MONTE CARLO Method [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2014
The location of the phase transition in the two dimensional Ising model were determined using Monte Carlo simulation with importance sampling. The magnetization persite ,energy per site , magnetic susceptibility , specific heat of a Ferromagnetic ...
Dhia K. Khudier, Nabeil A. Fawaz
doaj   +1 more source

Ising expansion for the Hubbard model [PDF]

open access: yesPhysical Review B, 1995
22 pages, 6 Postscript figures ...
Rajiv R. P. Singh, Zhu-Pei Shi
openaire   +4 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Dimers and the Ising model [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 2008
We present a innovative relationship between ground states of the Ising model and dimer coverings which sheds new light on the Ising Models with highly degenerated ground states and enables one to construct such models. Thanks to this relationship we also find the generating function for dimers as the appropriate limit of the free energy per spin for ...
openaire   +3 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

A GPU-Based Ising Machine With a Multi-Spin-Flip Capability for Constrained Combinatorial Optimization

open access: yesIEEE Access
Ising machines are domain-specific computers that solve combinatorial optimization problems (COPs). They utilize an Ising model to represent a COP and search for the optimal spin configuration of the Ising model to solve the COP.
Satoru Jimbo   +4 more
doaj   +1 more source

Interfering directed paths and the sign phase transition

open access: yes, 2010
We revisit the question of the "sign phase transition" for interfering directed paths with real amplitudes in a random medium. The sign of the total amplitude of the paths to a given point may be viewed as an Ising order parameter, so we suggest that a ...
B. Spivak   +4 more
core   +1 more source

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