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Isospin symmetry breaking at high spins in the mirror pair 67Se and 67As
Isospin symmetry breaking high spins mirror pair 67Se and 67As
2011/1/7
Recent experimental data have revealed large mirror energy differences (MED) between high-spin states in the mirror nuclei 67Se and 67As, the heaviest pair where MED have been determined so far. The M...
We discuss some recent lattice results on a few selected hadronic quantities relevant for heavy flavour phenomenology and present some recent theoretical developments. We put the emphasis on the chall...
We found a lot of new three dimensional N = 4 mirror pairs generalizing previous considerations on three dimensional generalized quiver gauge theories. We recovered almost all previous discovered mir...
Constraints for the QCD phase diagram from imaginary chemical potential
the QCD phase diagram imaginary chemical potential
2011/1/6
We present unambiguous evidence from lattice simulations of N_f=3 QCD for two tricritical points in the (T,m) phase diagram at fixed imaginary \mu/T=i\pi/3 mod. 2\pi/3, one in the light and one in the...
Form Factors in N=4 Super Yang-Mills and Periodic Wilson Loops
N=4 Super Yang-Mills Periodic Wilson Loops
2010/12/23
We calculate form factors of half-BPS operators in N=4 super Yang-Mills theory at tree level and one loop using novel applications of recursion relations and unitarity. In particular, we determine the...
Lattice Results for Low Moments of Light Meson Distribution Amplitudes
Lattice Results Low Moments Light Meson Distribution Amplitudes
2011/1/7
As part of the UKQCD and RBC collaborations' N_f=2+1 domain-wall fermion phenomenology programme, we calculate the first two moments of the light-cone distribution amplitudes of the pseudoscalar meson...
Finite temperature QCD at fixed Q with overlap fermions
Finite temperature QCD overlap fermions
2011/1/6
We present some preliminary results of the project on finite temperature QCD with overlap fermions at KEK. We performed a series of simulations to assess the effects of fixing the topological sector a...
Better HMC integrators for dynamical simulations
Better HMC integrators dynamical simulations
2011/1/6
We show how to improve the molecular dynamics step of Hybrid Monte Carlo, both by tuning the integrator using Poisson brackets measurements and by the use of force gradient integrators. We present res...
Numerical study of the phase transitions in the two-dimensional Z(5) vector model
the phase transitions the two-dimensional Z(5) vector model
2011/1/7
We investigate the critical properties of the two-dimensional Z(5) vector model. For this purpose, we propose a new cluster algorithm, valid for Z(N) models with odd values of N. The two-dimensional Z...
Recent progress on nuclear potentials from lattice QCD
Recent progress on nuclear potentials lattice QCD
2011/1/7
A new method for nuclear potentials is reviewed. The strategy to extract the potential from the Nambu-Bethe-Salpeter wave function in lattice QCD is explained and the first result based on the method ...
Four-dimensional Yang-Mills theory with a three-dimensional fermion membrane
Four-dimensional Yang-Mills theory three-dimensional fermion membrane
2011/1/7
We study the four-dimensional Yang-Mills theory in the presence of a three-dimensional membrane of fermions by lattice Monte Carlo simulations. We analyze the phase structure of this theory at finite ...
We discuss the distribution of the quark number over the gauge fields for QCD at nonzero quark chemical potential. As the quark number operator is non-hermitian, the distribution is over the complex p...
We explore in detail the prospects of obtaining a four-dimensional de Sitter universe in classical supergravity models with warped and time-independent extra dimensions, presenting explicit cosmologic...
Scalar field reconstruction of power-law entropy-corrected holographic dark energy
Scalar field reconstruction power-law entropy-corrected holographic dark energy
2010/12/24
A so called "power-law entropy-corrected holographic dark energy" (PLECHDE) was recently proposed to explain the dark energy dominated universe. This model is based on the power-law corrections to bl...
Resonance Parameters of the rho-Meson from Lattice QCD
Resonance Parameters rho-Meson from Lattice QCD
2011/1/7
We perform a non-perturbative lattice calculation of the P-wave pion-pion scattering phase in the rho-meson decay channel using two flavors of maximally twisted mass fermions at pion masses ranging fr...