نتایج جستجو برای: degenerate and nondegenerate regime

تعداد نتایج: 16842546  

2008
V. A. Belavin

We construct the four-point correlation functions containing the top component of the supermultiplet in the Neveu–Schwarz sector of the N=1 SUSY Liouville field theory. The construction is based on the recursive representation for the NS conformal blocks. We test our results in the case where one of the fields is degenerate with a singular vector on the level 3/2. In this case, the correlation ...

Journal: :Arthritis Research & Therapy 2008
Devina Purmessur Anthony J Freemont Judith A Hoyland

INTRODUCTION The neurotrophins nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) have been identified in the human intervertebral disc (IVD) and have been implicated in the mechanisms associated with nerve ingrowth and nociception in degeneration of the IVD. The aim of the current study was to investigate an association between neurotrophin expression in the IVD and the sev...

Journal: :SIAM J. Scientific Computing 2002
Robert Eymard Thierry Gallouët Raphaèle Herbin Anthony Michel

We propose a second order finite volume scheme for nonlinear degenerate parabolic equations. For some of these models (porous media equation, drift-diffusion system for semiconductors, ...) it has been proved that the transient solution converges to a steady-state when time goes to infinity. The present scheme preserves steady-states and provides a satisfying long-time behavior. Moreover, it re...

2002
EDWIN DUDA

This paper is concerned with conditions under which a metric continuum (a compact connected metric space) contains a nondegenerate chainable continuum. This paper is concerned with conditions under which a metric continuum (a compact connected metric space) contains a non-degenerate chainable continuum. By R.H. Bing’s theorem eleven [2] if a metric continuum X contains a non-degenerate subconti...

Journal: :Atti della Accademia nazionale dei Lincei 2022

In the present work we are concerned with following Kirchhoff-Choquard-type equation $$-M(||\nabla u||_{2}^{2})\Delta u +Q(x)u + \mu(V(|\cdot|)\ast u^2)u = f(u) \mbox{ in } \mathbb{R}^2 , $$ for $M: \mathbb{R} \rightarrow \mathbb{R}$ given by $M(t)=a+bt$, $ \mu >0 $, V a sign-changing and possible unbounded potential, Q continuous external potential nonlinearity $f$ exponential critical growth....

Journal: :Physical review letters 2007
Takeshi Fukuhara Yosuke Takasu Mitsutaka Kumakura Yoshiro Takahashi

Evaporative cooling was performed to cool fermionic 173Yb atoms in a crossed optical dipole trap. The large elastic collision rate leads to efficient evaporation and we have successfully cooled the atoms to 0.37+/-0.06 of the Fermi temperature, that is to say, to a quantum degenerate regime. In this regime, a plunge of evaporation efficiency was observed as a result of Fermi degeneracy.

Journal: :Annalen der Physik 2023

The cat state, known as the superposition of coherent states, has broad applications in quantum computation and metrology. Increasing number optical states is crucial to implement complex information tasks based on them. Here, two are prepared simultaneously a nondegenerate parametric amplifier. By subtracting one photon from each squeezed vacuum odd with orthogonal direction phase space simult...

Journal: :Molecular biology and evolution 1998
L C Shimmin J Miller H N Tran W H Li

The X-linked color pigment (opsin) locus is known to be highly polymorphic in the squirrel monkey and other New World monkeys. To see whether this is also the case for the autosomal (blue) opsin locus, we obtained 32 squirrel monkey and 30 human blue opsin gene sequences. No amino acid polymorphism was found in either the squirrel monkey sample or the human sample, contrary to the situation at ...

M. ‎Rostamy-‎Malkhalifeh‎‎, Z. ‎Aghababazadeh‎‎

It is well known that in operations research‎, ‎degeneracy can cause a cycle in a network‎ ‎simplex algorithm which can be prevented by maintaining strong‎ ‎feasible bases in each pivot‎. ‎Also‎, ‎in a network consists of n arcs‎ ‎and m nodes‎, ‎not considering any new conditions on the entering‎ ‎variable‎, ‎the upper bound of consecutive degenerate pivots is equal‎ $left( ‎begin{array}{c}‎ ‎n...

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