The first-order phase transition in the one-dimensional q-state Potts model with long-range interactions decaying with distance as 1/r 1+σ has been studied by Monte Carlo numerical simulations for 0 < σ ≤ 1 and integer values of q > 2. On the basis of finite-size scaling analysis of interface free energy ∆F L , specific heat and Binder's fourth order cumulant, we obtain the first-order transiti...

mangrove sediments were collected during wet and dry seasons from nine stations in khamir,laft and natural reservoir mangrove-dense areas of hormozgan province in the south of iran. σ pcbs ranged from 5.33 to 15.5 ng/g dry weight and the dominant congener was no.153. average σ ddts for khamir and laft mangroves were 16.58 ± 1.51 and 18.8 ± 9.98 ng/g dry weight. ddt was more abundant than dde an...

mangrove sediments were collected during wet and dry seasons from nine stations in khamir,laft and natural reservoir mangrove-dense areas of hormozgan province in the south of iran. σ pcbs ranged from 5.33 to 15.5 ng/g dry weight and the dominant congener was no.153. average σ ddts for khamir and laft mangroves were 16.58 ± 1.51 and 18.8 ± 9.98 ng/g dry weight. ddt was more abundant than dde an...

We show that the quark (not nucleon) based chiral linear σ model which receives strong support as a mean field theory for the strong interactions can actually be made asymptotically free by coupling to gluons. It has the further bonus of providing confinement.Alternatively, this theory is QCD that is chirally extended by the addition of a (σ, π) chiral multiplet. It could therefore be a candida...

The inverse seesaw mechanism of neutrino mass, i.e. mν ≃ (m2D/m2N )ǫL where ǫL is small, is discussed in the context of the U(1)Σ model. This is a gauge extension of the Standard Model of particle interactions with lepton triplets (Σ,Σ,Σ) as (Type III) seesaw anchors for obtaining small Majorana neutrino masses. Introduction : If the SU(3)C×SU(2)L×U(1)Y Standard Model (SM) of particle interacti...

The critical behaviour of the one-dimensional q-state Potts model with long-range interactions decaying with distance r as r −(1+σ) has been studied in the wide range of parameters 0 < σ ≤ 1 and 1 16 ≤ q ≤ 64. A transfer matrix has been constructed for a truncated range of interactions for integer and continuous q, and finite range scaling has been applied. Results for the phase diagram and the...

Ising models with pairwise interactions are the least structured, or maximum–entropy, probability distributions that exactly reproduce measured pairwise correlations between spins. Here we use this equivalence to construct Ising models that describe the correlated spiking activity of populations of 40 neurons in the retina, and show that pairwise interactions account for observed higher–order c...

The first-order phase transition in the one-dimensional q-state Potts model with long-range interactions decaying with distance as 1 r1 σ, has been studied by Monte Carlo numerical simulations for 0 σ 1 and integer values of q 2. On the basis of the finite-size scaling analysis of interface free energy ∆FL, specific heat and Binder’s fourth order cumulant, we obtain the first-order transition w...