Monte Carlo simulations within the grand canonical ensemble are used to obtain the joint distribution of density and energy fluctuations pL(ρ, u) for two model fluids: a decorated lattice gas and a polymer system. In the near critical region the form of pL(ρ, u) is analysed using a mixed field finite-size-scaling theory that takes account of liquidvapour asymmetry. Field mixing transformations ...

If the smallness of the mass of the sterile neutrino is to be explained by seesaw mechanism, the off-diagonal entries of its mass matrix has to be protected by some symmetry near the electroweak scale. We study a gauge model based on SU(2)qL × SU(2) l L × U(1) q Y × U(1) l Y un-unified gauge group which breaks to SU(2)L × U(1)Y at the TeV region and this serves our purpose. The diagonal element...

The $U(1)$ global symmetry to solve the strong $CP$ problem could be remnant of multi-$U(1)$ symmetries from QCD and hidden dynamics. Both Peccei-Quinn dynamical are described uniformly, based on which we classify various mixed two-$U(1)$ models both quality problems. We propose a moose diagram method with different fermion assignments directly read relations between phases, illustrate how is s...

Let F :=(f1, . . . , fn) be a random polynomial system with fixed n-tuple of supports. Our main result is an upper bound on the probability that the condition number of f in a region U is larger than 1/ε. The bound depends on an integral of a differential form on a toric manifold and admits a simple explicit upper bound when the Newton polytopes (and underlying covariances) are all identical. W...

Anovel characteristic expandedmixed finite elementmethod is proposed and analyzed for reaction-convection-diffusion problems. The diffusion term ∇ ⋅ (a(x, t)∇u) is discretized by the novel expanded mixed method, whose gradient belongs to the square integrable space instead of the classical H(div; Ω) space and the hyperbolic part d(x)(∂u/∂t) + c(x, t) ⋅ ∇u is handled by the characteristic method...

Exact critical exponents of the Green functions for pseudo-fermions and slave bosons in the SU(N) Anderson model with U → ∞ are obtained by using the Bethe ansatz solution and boundary conformal field theory. They are evaluated exactly for mixed valence systems and Kondo systems with crystalline fields. The results agree with the prediction of Menge and Müller-Hartmann, which coincide with thos...

N = 2 supersymmetric U(N) Yang-Mills theory softly broken to N = 1 by the superpotential of the adjoint scalar fields is discussed from the viewpoint of the Whitham deformation theory for prepotential. With proper identification of the superpotential we derive the matrix model curve from the condition that the mixed second derivatives of the Whitham prepotential have a nontrivial kernel. e-mail...

considering the importance of cd and u as pollutants of the environment, this study aims to predict the concentrations of these elements in a stream sediment from the eshtehard region in iran by means of a developed artificial neural network (ann) model. the forward selection (fs) method is used to select the input variables and develop hybrid models by ann. from 45 input candidates, 13 and 14 ...

We consider the following problem. Let us fix a finite alphabet A = {1,2, · · · ,d}; for any d-uple of letter frequencies ( f1, · · · , fd) ∈ [0,1]d with ∑i=1 fi = 1, how to construct an infinite word u over the alphabet A satisfying the following conditions: u has linear complexity function, u is uniformly balanced, the letter frequencies in u are given by ( f1, · · · , fd). This paper investi...