Liquid-to-gas phase transitions in two-dimensional quantum systems at zero temperature

1978 ◽  
Vol 32 (1-2) ◽  
pp. 145-157 ◽  
Author(s):  
M. D. Miller ◽  
L. H. Nosanow
Keyword(s):  
Phase Transitions ◽  
Gas Phase ◽  
Quantum Systems ◽  
Two Dimensional ◽  
Zero Temperature

Zero-temperature phase transitions in quantum systems with symmetry-conserving impurities

1989 ◽  
Vol 157 (3) ◽  
pp. 1227-1258 ◽  
Author(s):  
G. Busiello ◽  
L. De Cesare ◽  
K. Lukierska-Walasek ◽  
K. Walasek
Keyword(s):  
Phase Transitions ◽  
Quantum Systems ◽  
Temperature Phase ◽  
Zero Temperature

scholarly journals THREE-SPIN INTERACTIONS AND ENTANGLEMENT IN OPTICAL LATTICES

2006 ◽  
Vol 04 (03) ◽  
pp. 541-549 ◽  
Author(s):  
JIANNIS K. PACHOS
Keyword(s):  
Phase Transitions ◽  
Optical Lattice ◽  
Optical Lattices ◽  
Ground States ◽  
Cold Atom ◽  
Quantum Systems ◽  
Two Dimensional ◽  
Spin Interactions ◽  
Recent Developments ◽  
Atomic Species

The entanglement properties of some novel quantum systems are studied that are inspired by recent developments in cold-atom technology. A triangular optical lattice of two atomic species can be employed to generate a variety of spin-1/2 Hamiltonians including effective three-spin interactions. A variety of one- or two-dimensional systems can thus be realized that possess multi-degenerate ground states or non-vanishing chirality. The properties of these ground states and their phase transitions are probed with appropriate measures such as the entropic entanglement and the spin chirality.

Liquid-to-Gas Phase Transition in Quantum Systems at Zero Temperature

1975 ◽  
Vol 35 (9) ◽  
pp. 581-584 ◽  
Author(s):  
M. D. Miller ◽  
L. H. Nosanow ◽  
L. J. Parish
Keyword(s):  
Phase Transition ◽  
Gas Phase ◽  
Quantum Systems ◽  
Zero Temperature

scholarly journals Phase transitions in GLSMs and defects

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Ilka Brunner ◽  
Fabian Klos ◽  
Daniel Roggenkamp
Keyword(s):  
Phase Transitions ◽  
Boundary Conditions ◽  
Sigma Models ◽  
Domain Walls ◽  
Two Dimensional ◽  
Linear Sigma Models

Abstract In this paper, we construct defects (domain walls) that connect different phases of two-dimensional gauged linear sigma models (GLSMs), as well as defects that embed those phases into the GLSMs. Via their action on boundary conditions these defects give rise to functors between the D-brane categories, which respectively describe the transport of D-branes between different phases, and embed the D-brane categories of the phases into the category of D-branes of the GLSMs.

Numerical Analysis of Two-Phase Pipe Flow of Liquid Helium Using Multi-Fluid Model

2001 ◽  
Vol 123 (4) ◽  
pp. 811-818 ◽  
Author(s):  
Jun Ishimoto ◽  
Mamoru Oike ◽  
Kenjiro Kamijo
Keyword(s):  
Phase Transition ◽  
Gas Phase ◽  
Liquid Helium ◽  
Two Phase Flow ◽  
Fluid Model ◽  
Numerical Results ◽  
Phase Flow ◽  
Two Dimensional ◽  
Two Phase ◽  
Normal Fluid

The two-dimensional characteristics of the vapor-liquid two-phase flow of liquid helium in a pipe are numerically investigated to realize the further development and high performance of new cryogenic engineering applications. First, the governing equations of the two-phase flow of liquid helium based on the unsteady thermal nonequilibrium multi-fluid model are presented and several flow characteristics are numerically calculated, taking into account the effect of superfluidity. Based on the numerical results, the two-dimensional structure of the two-phase flow of liquid helium is shown in detail, and it is also found that the phase transition of the normal fluid to the superfluid and the generation of superfluid counterflow against normal fluid flow are conspicuous in the large gas phase volume fraction region where the liquid to gas phase change actively occurs. Furthermore, it is clarified that the mechanism of the He I to He II phase transition caused by the temperature decrease is due to the deprivation of latent heat for vaporization from the liquid phase. According to these theoretical results, the fundamental characteristics of the cryogenic two-phase flow are predicted. The numerical results obtained should contribute to the realization of advanced cryogenic industrial applications.

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