I. S. Terekhov

Induced current and Aharonov-Bohm effect in graphene

The effect of vacuum polarization in the field of an infinitesimally thin solenoid at distances much larger than the radius of solenoid is investigated. The induced charge density and induced current are calculated. Though the induced charge density turned out to be zero, the induced current is a finite periodical function of the magnetic flux . The expression for this function is found exactly in a value of the flux. The induced current is equal to zero at the integer values of /0 as well as at half-integer values of this ratio, where 0=2c /e is the elementary magnetic flux. The latter is a consequence of the Furry theorem and periodicity of the induced current with respect to magnetic flux. As an example we consider the graphene in the field of solenoid perpendicular to the plane of a sample.

Radiative corrections and parity nonconservation in heavy atoms.

The self-energy and the vertex radiative corrections to the effect of parity nonconservation in heavy atoms are calculated analytically in orders Zalpha2 and Z2alpha3ln((lambda(C)/r(0)), where lambda(C) and r(0) are the Compton wavelength and the nuclear radius, respectively. The sum of the radiative corrections is -0.85% for Cs and -1.41% for Tl. Using these results, we have performed analysis of the experimental data on atomic parity nonconservation. The values obtained for the nuclear weak charge, Q(W)=-72.90(28)exp(35)theor for Cs, and Q(W)=-116.7(1.2)exp(3.4)(theor) for Tl, agree with predictions of the standard model. As an application of our approach, we have also calculated analytically the dependence of the Lamb shift on the finite size of the nucleus.

Virtual light-by-light scattering and the g factor of a bound electron

The contribution of the light-by-light diagram to the

Calculation of radiative corrections to the effect of parity nonconservation in heavy atoms

g

Bremsstrahlung inαDecay Reexamined

factor of an electron and muon bound in a Coulomb field is obtained. For an electron in a ground state, our results are in good agreement with the results of other authors obtained numerically for large

Finite-nuclear-size effect on the Lamb shift of s{sub 1/2}, p{sub 1/2}, and p{sub 3/2} atomic states

Z

Quasiclassical description of bremsstrahlung accompanying α decay including quadrupole radiation

. For relatively small

Induced current in the presence of a magnetic flux tube of small radius

Z

Quasilocalized states in a model of electron-electron interaction in graphene

our results have essentially higher accuracy as compared to the previous ones. For muonic atoms, the contribution is obtained with a high accuracy in the whole region of

Induced charge generated by a potential well in graphene

Z