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Proton size anomaly
Proton size anomaly
2011/1/7
A measurement of the Lamb shift in muonic hydrogen yields a charge radius of the proton that
is smaller than the CODATA value by about 5 standard deviations. We explore the possibility that new scala...
Two flavor QCD involves three independent mass parameters for which non-perturbative effects are not universal.This precludes matching lattice and perturbative results for non-degenerate quarks and el...
Hyperfine-mediated static polarizabilities of monovalent atoms and ions
Hyperfine-mediated static polarizabilities monovalent atoms
2010/11/16
We apply relativistic many-body methods to compute static differential polarizabilities for transitions inside the ground-state hyperfine manifolds of monovalent atoms and ions. Knowing this transiti...
Confining vs. conformal scenario for SU(2) with adjoint fermions. Gluonic observables
Confining vs. conformal scenario SU(2) adjoint fermions Gluonic observables
2011/1/13
Walking technicolor is a mechanism for electroweak symmetry breaking without Higgs field. The
Higgs mechanism is provided by chiral symmetry breaking in the technicolor theory. An essential
ingredie...
Observation of atomic localization using Electromagnetically Induced Transparency
atomic localization Electromagnetically Induced Transparency
2010/11/16
We present a proof-of-principle experiment in which the population of an atomic level is spatially localized using the technique of electromagnetically-induced transparency (EIT). The key idea is to ...
Index Theorem and Overlap Formalism with Naive and Minimally Doubled Fermions
Index Theorem Overlap Formalism Naive Minimally Doubled Fermions
2011/1/13
We present a theoretical foundation for the Index theorem in naive and minimally doubled lattice fermions by studying the spectral flow of a Hermitean version of Dirac operators.
200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
200 A GeV Au+Au collisions quark-gluon liquid
2011/1/6
The specific shear viscosity (/s)QGP of a Quark-Gluon-Plasma (QGP) at temperatures
Tc
Domain Wall Fermion Lattice Simulation in Quaternion Basis
Domain Wall Fermion Lattice Simulation Quaternion Basis
2011/1/14
In the QCD analysis, when quarks are expressed in quaternion basis, the quark and its charge
conjugate together are expressed by octonions and the octonion posesses the triality symmetry.
Gluos are ...
Chiral fermions and the standard model from the matrix model compactified on a torus
Chiral fermions standard model matrix model compactified
2011/1/14
It is shown that the IIB matrix model compactified on a six-dimensional torus with a nontrivial topology can provide chiral fermions and matter content close to the standard model on our four-dimensio...
Towards the N_f=2 deconfinement transition temperature with O(a) improved Wilson fermions: An update
Lattice QCD Quark-gluon plasma Deconfinement Phase transitions
2011/1/14
We give an update on our current project to determine the transition temperature and the order of the deconfinement transition in the chiral limit of two flavour QCD. We use nonperturbatively O(a) imp...
Perturbative renormalization factors and O(a^2) corrections for lattice 4-fermion operators with improved fermion/gluon actions
Perturbative renormalization factors O(a^2) corrections lattice 4-fermion operators improved fermion/gluon actions
2011/1/14
In this work we calculate the corrections to the amputated Green’s functions of 4-fermion
operators, in 1-loop Lattice Perturbation theory. One of the novel aspects of our calculations
is that they ...
Nernst and Seebeck effect in a graphene nanoribbon
Nernst Seebeck effect graphene nanoribbon
2010/11/22
The thermoelectric power, including the Nernst and Seebeck effects, in graphene nanoribbon is studied. By using the non-equilibrium Green function combining with the tight-binding Hamiltonian, the Ner...
Statistics of polymer extensions in turbulent channel flow
Statistics of polymer extensions turbulent channel flow
2010/11/17
We present direct numerical simulations~(DNSs) of turbulent channel flow with passive Lagrangian polymers. To understand the polymer behavior we investigate the behavior of infinitesimal line elements...
Constraining the mixing matrix for Standard Model with four generations: time dependent and semi-leptonic CP asymmetries in $B_d^0$, $B_s$ and $D^0$
Constraining the mixing matrix Standard Model four generations: time dependent semi-leptonic CP asymmetries $B_d^0$, $B_s$ $D^0$
2011/1/6
Using existing experimental information from K, B and D decays as well as electroweak precision tests and oblique parameters, we provide constraints and correlations on the pa-
rameters of the 4X4 mi...
The anti-quark--quark potential from Bethe-Salpeter amplitudes on lattice
anti-quark--quark potential Bethe-Salpeter amplitudes
2011/1/14
Potentials of quark–anti-quark pairs are studied from the q¯-q Nambu-Bethe-Salpeter (NBS) wave functions in quenched lattice QCD. With the use of a method which has been recently developed in the...