1 . D i a g n o s i s : c . G r a n u l o m a o f t h e c o n j u n c t i v a f o l l o w i n g t r i c h i a s i s s u r g e r y . T h i s m a y o c c u r 6 w e e k s t o 6 m o n t h s a f t e r t h e o p e r a t i o n . 2 . R i s k f a c t o r s : c . T h e c o m m o n e s t c a u s e i s r e t e n t i o n o f a f r a g m e n t o f n o n a b s o r b a b l e s...

We show that the algebra of commuting Hamiltonians of the homogeneous XXX Heisenberg model has simple spectrum on the subspace of singular vectors of the tensor product of two-dimensional gl 2 -modules. As a byproduct we show that there exist exactly ( n l )

The Euler-Heisenberg effective action in a self-dual background is remarkably simple at two-loop. This simplicity is due to the inter-relationship between self-duality, helicity and supersymmetry. Applications include two-loop helicity amplitudes, beta-functions and nonperturbative effects. The two-loop EulerHeisenberg effective Lagrangian for QED in a self-dual background field is naturally ex...

It is shown that q-deformed quantummechanics (systems with q-deformed Heisenberg commutation relations) can be interpreted as an ordinary quantum mechanics on Kähler manifolds, or as a quantum theory with second (or first)-class constraints. 1. The q-deformed Heisenberg-Weyl algebras [1], [2] exhibiting the quantum group symmetries [3],[4] have attracted much attention of physicists and mathema...

In this paper the the effect of Dzyaloshinskii-Moriya interaction and anisotropy on the Entanglement of Heisenberg chain has been studied. While the anisotropy suppress the entanglement due to favoring of the alignment of spins, the DM interaction restores the spoiled entanglement via creation of the quantum fluctuations. Thermodynamic limit of the model and emerging of nonanalytic behavior of ...

The ground-state properties of the square-lattice spin-1/2 Heisenberg antiferromagnet with spatially anisotropic couplings are investigated by Green’s-function projection approaches. The staggered magnetization and the two-spin correlators are calculated; the competition between magnetic longand short-range order is discussed in comparison with experiments on Sr2[Ca2]CuO3.