We study the Higgs-boson mass spectrum of the minimal supersymmetric standard model, in which the tree-level CP invariance of the Higgs potential is broken explicitly by loop effects of soft-CP-violating Yukawa interactions related to scalar quarks of the third generation. The analysis is performed by considering the CP-non-invariant renormalization-group improved effective potential through ne...

We consider the nucleon-nucleon potential in quenched and partiallyquenched QCD. The leading one-meson exchange contribution to the potential is found to fall off exponentially at long-distances, in contrast with the Yukawa-type behaviour found in QCD. This unphysical component of the two-nucleon potential has important implications for the extraction of nuclear properties from lattice simulati...

we study local stability of self-gravitating fluid and stellar disk in the context of modified gravity theories which predict a yukawa-like term in the gravitational potential of a point mass. we investigate the effect of such a yukawa-like term on the dynamics of self-gravitating disks. more specifically, we investigate the consequences of the presence of this term for the local stability of t...

In this note we apply the Poisson sum rule [1] to obtain formal expressions for the Fourier coefficients of the potential of a lattice of generalized charge. Each generalized charge is assumed to contribute to the potential a term which depends only on the vector displacement from the charge’s position. The coefficients are explicitly calculated for two types of individual charge potentials: Co...

We study a supersymmetric extension of the Standard Model based on discrete A4×Z3×Z4 flavor symmetry. We obtain quark mixing angles as well as a realistic fermion mass spectrum and we predict tribimaximal leptonic mixing by a spontaneous breaking of A4. The top quark Yukawa interaction is present at the renormalizable level in the superpotential while all the other Yukawa interactions arise onl...

We study the discovery potential for doubly charged Higgs bosons, ∆, in the process eγ → eμμ for centre of mass energies appropriate to high energy ee linear colliders and the CLIC proposal. For M∆ < √ seγ discovery is likely for even relatively small values of the Yukawa coupling to leptons. However, even far above threshold, evidence for the ∆ can be seen due to contributions from virtual int...

QCD predicts that the interactions between quarks and gluons change from a confining to a screened Yukawa form above a critical temperature Tc ∼ 150 MeV. In this talk, I review some of the key observables in heavy ion reactions which are being used to search for this new partonic Yukawa phase at SPS and RHIC. These include collective observables such as dE⊥/dyd p⊥, meson interferometry, jet que...

*Correspondence: Makoto Yasutomi, Department of Physics and Earth Sciences, Faculty of Science, University of the Ryukyus, Senbara 1, Nishihara-Cho, Okinawa 903-0213, Japan e-mail: g800002@lab.u-ryukyu.ac.jp We determined many functional representations of interparticle interactions between water molecules, all of which reproduce the experimentally measured density-temperature relation at 1 bar...

We study the effect of cubic torus topology Universe on scalar cosmological perturbations which define gravitational potential. obtain three alternative forms solution for both potential produced by point-like masses, and corresponding force. The first includes expansion delta-functions into Fourier series, exploiting periodic boundary conditions. second one is composed summed solutions Helmhol...

We assess the accuracy of the self-consistent Ornstein-Zernike approximation for a binary symmetric hard-core Yukawa mixture by comparison with Monte Carlo simulations of the phase diagrams obtained for different choices of the ratio alpha of the unlike-to-like interactions. In particular, from the results obtained at alpha=0.75 we find evidence for a critical endpoint in contrast to recent stu...