We consider the relation between SYK-like models and vector models by studying a toy model where a tensor field is coupled with a vector field. By integrating out the tensor field, the toy model reduces to the Gross-Neveu model in 1 dimension. On the other hand, a certain perturbation can be turned on and the toy model flows to an SYK-like model at low energy. A chaotic-nonchaotic phase transit...

A r = magnetic potential vector B = azimuthal magnetic field B r = magnetic field vector C = electromagnetic Chapman-Jouguet speed csound = speed of sound E r = electric field vector e = internal energy H = Hugoniot constant h = enthalpy I = total current J = current density L = energy lost l = characteristic length scale of thruster m = mass of the particle mi = ion mass p = pressure p = total...

The spherically symmetric magnetic monopole in an SU(2) gauge theory coupled to a massless Higgs field is shown to possess an infinite number of resonances or quasinormal modes. These modes are eigenfunctions of the isospin 1 perturbation equations with complex eigenvalues, E(n)=omega(n)-igamma(n), satisfying the outgoing radiation condition. For n--> infinity, their frequencies omega(n) approa...

Soliton solutions of the perturbedLandau-Lifshitz equation, S t = [S × Sxx ] + [S × JS] + ER(S), c being a small parameter, describing the nonlinear dynamics of the magnetization field in a one-dimensional ferromagnet with a biaxial anisotropy, are analysed. Perturbation theory based on the Riemarm problem is constructed for studying the influence of small perturbations on the dynamics of domai...

To improve the overall temporal and spatial resolution of brain mapping techniques, in animal models, some attempts have been reported to join electrophysiological methods with functional magnetic resonance imaging (fMRI). However, little attention has been paid to the image artefacts produced by the microelectrodes that compromise the anatomical or functional information of those studies. This...

Electromagnetic interactions are incorporated into Heavy Hadron Chiral Perturbation Theory. Short and long distance magnetic moment contributions to the chiral Lagrangian are identified, and M1 radiative decays of heavy vector mesons and sextet baryons are studied. Using recent CLEO D branching fraction ratio data, we fit the meson coupling to the axial vector Goldstone current and find g 1 = 0...

In this paper the problem on “Magnetic fluid lubrication of porous-pivoted slider bearing with slip velocity by N Ahmad et.al.[7]” has been recapitulated using Jenkin’s model [4] with the additional effect of squeeze velocity of the above plate. It is found that while discussing the above problem, [7] has stated but ignored the term , where +, in their study (Refer equation(2.2)). This paper re...

The equations governing the flow of an electrically conducting, incompressible viscous fluid over an infinite flat plate in the presence of a magnetic field are investigated using the homotopy perturbation method (HPM) with Padé approximants (PA) and 4 order Runge–Kutta method (4RKM). Approximate analytical and numerical solutions for the velocity field and heat transfer are obtained and compar...