نتایج جستجو برای: transition point

تعداد نتایج: 768411  

2008
Michel Pleimling Ferenc Iglói

We study numerically the nonequilibrium dynamical behavior of an Ising model with mixed two-spin and four-spin interactions after a sudden quench from the high-temperature phase to the first-order phase transition point. The autocorrelation function is shown to approach its limiting value, given by the magnetization in the ordered phase at the transition point, mc, through a stretched exponenti...

2013
Hannu-Pekka Komsa Arkady V. Krasheninnikov

We calculate from first principles the electronic structure and optical properties of a number of transition metal dichalcogenide (TMD) bilayer heterostructures consisting of MoS2 layers sandwiched with WS2, MoSe2, MoTe2, BN, or graphene sheets. Contrary to previous works, the systems are constructed in such a way that the unstrained lattice constants of the constituent incommensurate monolayer...

1997
Christopher Beck W. Ken Jackson

Recent research has shown the existence of a “phase transition” for many combinatorial problems. In this paper we investigate the existence of a phase transition in the job shop scheduling problem. We apply standard estimates for the constrainedness of constraint satisfaction problems to job shop problems and describe empirical results identifying a phase transition at a constrainedness level o...

2008
Michael Grady

An analysis of scaling along the first-order bulk transition line in fundamental-adjoint SU(2) lattice gauge theory strongly supports the firstorder endpoint being a tricritical point, and is inconsistent with it being an ordinary critical point as is usually assumed. If tricritical, the transition must continue from the endpoint further into the phase diagram as a second-order bulk transition ...

Journal: :Nanoscale 2015
Marc Dvorak Zhigang Wu

The honeycomb lattice of graphene is characterized by linear dispersion and pseudospin chirality of fermions on the Dirac cones. If lattice anisotropy is introduced, the Dirac cones stay intact but move in reciprocal space. Dirac point movement can lead to a topological transition from semimetal to semiconductor when two inequivalent Dirac points merge, an idea that has attracted significant re...

2013
David Rahn Thomas Parish David Leon DAVID A. RAHN THOMAS R. PARISH DAVID LEON

Low-level winds along the Californian coast during spring and early summer are typically strong and contained within the cool, well-mixed marine boundary layer (MBL). A temperature inversion separates the MBL from the warmer free troposphere. This setup is often represented by a two-layer shallow-water system with a lateral boundary. Near a prominent point such as Point Conception, California, ...

2014
Gia Dvali Cesar Gomez

We reformulate the quantum black hole portrait in the language of modern condensed matter physics. We show that black holes can be understood as a graviton Bose-Einstein condensate at the critical point of a quantum phase transition, identical to what has been observed in systems of cold atoms. The Bogoliubov modes that become degenerate and nearly gapless at this point are the holographic quan...

2009
A. J. Levin M. R. Black M. S. Dresselhaus

Indirect L to T point optical transition in bismuth nanowires. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. An indirect electronic transition from the L point v...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2014
Tomokatsu Onaga Shigeru Shinomoto

Self-exciting point processes describe the manner in which every event facilitates the occurrence of succeeding events, as in the case of epidemics or human activity. By increasing excitability, the event occurrences start to exhibit bursts even in the absence of external stimuli. We revealed that the transition is uniquely determined by the average number of events added by a single event, 1-1...

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