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Uncomputability of phase diagrams [PDF]

open access: yesNature Communications, 2021
AbstractThe phase diagram of a material is of central importance in describing the properties and behaviour of a condensed matter system. In this work, we prove that the task of determining the phase diagram of a many-body Hamiltonian is in general uncomputable, by explicitly constructing a continuous one-parameter family of Hamiltonians H(φ), where $$\
Bausch, Johannes   +2 more
openaire   +5 more sources

True Phase Diagrams [PDF]

open access: yesMetallurgical and Materials Transactions A, 2014
Abstract With the use of today’s computer softwares, phase diagrams can readily be plotted with a wide choice of variables on the axes. Hillert defined a true phase diagram as a diagram where each point uniquely defines the stable phases. He also showed that not all choices of axis variables give true phase diagrams.
Ågren, John, Schmid-Fetzer, Rainer
openaire   +2 more sources

Effective Kinetic Phase Diagrams [PDF]

open access: yesThe Journal of Physical Chemistry B, 2005
The composition of a solid solution that is growing at conditions well away from equilibrium is not prescribed by equilibrium thermodynamics, but is determined kinetically. It depends both on the surface kinetics and on the transport of mass and heat to and away from the solidification front. In previous work, we have formulated a model for the kinetic
Los, J.H., Matovic, M.
openaire   +5 more sources

Phase Diagrams for Sonoluminescing Bubbles [PDF]

open access: yes, 1996
Sound driven gas bubbles in water can emit light pulses. This phenomenon is called sonoluminescence (SL). Two different phases of single bubble SL have been proposed: diffusively stable and diffusively unstable SL.
Birkhoff G.   +4 more
core   +4 more sources

Engineering Holographic Superconductor Phase Diagrams [PDF]

open access: yes, 2016
We study how to engineer holographic models with features of a high temperature superconductor phase diagram. We introduce a field in the bulk which provides a tunable "doping" parameter in the boundary theory.
Chen, Jiunn-Wei   +3 more
core   +2 more sources

P-T phase diagram of a holographic s+p model from Gauss-Bonnet gravity [PDF]

open access: yes, 2015
In this paper, we study the holographic s+p model in 5-dimensional bulk gravity with the Gauss-Bonnet term. We work in the probe limit and give the $\Delta$-T phase diagrams at three different values of the Gauss-Bonnet coefficient to show the effect of ...
Nie, Zhang-Yu, Zeng, Hui
core   +2 more sources

Energy spectrum and phase diagrams of two-sublattice hard-core boson model [PDF]

open access: yes, 2013
The energy spectrum, spectral density and phase diagrams have been obtained for two-sublattice hard-core boson model in frames of random phase approximation approach.
Stasyuk, I. V., Vorobyov, O.
core   +4 more sources

DDW Order and its Role in the Phase Diagram of Extended Hubbard Models [PDF]

open access: yes, 2002
We show in a mean-field calculation that phase diagrams remarkably similar to those recently proposed for the cuprates arise in simple microscopic models of interacting electrons near half-filling.
A. Ino   +49 more
core   +1 more source

Phase Diagrams For The Blue Phases Of Highly Chiral Liquid Crystals [PDF]

open access: yes, 1993
Polarizing microscopy and optical-activity measurements are used to determine the phase diagram for the blue phases of chiral-racemic mixtures of terephthaloyloxy-bis-4-(2\u27-methylbutyl) benzoate.
Booth, C. J.   +3 more
core   +2 more sources

Accumulation horizons and period-adding in optically injected semiconductor lasers [PDF]

open access: yes, 2007
We study the hierarchical structuring of islands of stable periodic oscillations inside chaotic regions in phase diagrams of single-mode semiconductor lasers with optical injection.
A. Endler   +8 more
core   +3 more sources

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