Assuming the solar and atmospheric neutrino deficits to be due to neutrino oscillations, it is shown that the 3× 3 mass matrix spanning νe, νμ, and ντ may have already revealed a seesaw mass pattern. Also, this matrix is the natural reduction of a simple 5 × 5 seesaw mass matrix with one large scale, the 4 × 4 reduction of which predicts that a fourth neutrino would mix with νe and νμ in such a...

We have obtained the neutrino mass matrix with the large mixing angle (LMA) MSW solution, sin 2θ⊙ = 0.65 ∼ 0.97 and ∆m⊙ = 10 −5 ∼ 10−4eV2, in the S3L × S3R flavor symmetry. The structure of our neutrino mass matrix is found to be stable against radiative corrections. The solar neutrino data as well as the atmospheric one give big impact on the study of the lepton mass matrices. There is a typic...

the matrix functions appear in several applications in engineering and sciences. the computation of these functions almost involved complicated theory. thus, improving the concept theoretically seems unavoidable to obtain some new relations and algorithms for evaluating these functions. the aim of this paper is proposing some new reciprocal for the function of block anti diagonal matrices. more...

Fractured carbonate reservoirs account for 25% of world’s total oil resources and for 90% of Iranian oil reserves. Since calcite and dolomite minerals are oil wet, gas oil gravity drainage (GOGD) is known as the most influencing production mechanism. The most important issue within gas injection into fractured media is the channeling problem which makes the efficiency of gas injection process e...

We study the neutrino mixing matrix (MNS matrix) in seesaw model. Assuming large mass hierarchy for heavy right-handed Majorana mass, we show that MNS matrix is determined by a unitary matrix which transforms neutrino yukawa term into a triangular form. Large mixing may occur even if yukawa matrix for charged lepton and that for neutrino is simultaneously diagonalized by biunitary transformatio...

The transmission simulator method of experimental dynamic substructuring captures the interface forces and motions through a fixture called a transmission simulator. The transmission simulator method avoids the need to measure connection point rotations and enriches the modal basis of the substructure model. The free modes of the experimental substructure mounted to the transmission simulator a...