Transport in undoped graphene is related to percolating current patterns in the networks of n- and p-type regions reflecting the strong bipolar charge density fluctuations. Finite transparency of theâ€¦ (More)

A theoretical interpretation of the recent experiments of Astafiev et al. on the T1-relaxation rate in Josephson charge qubits is proposed. The experimentally observed reproducible nonmonotonicâ€¦ (More)

We develop an explicit description of a time-dependent response of fermionic condensates to perturbations. The dynamics of Cooper pairs at times shorter than the energy relaxation time can beâ€¦ (More)

The paper is devoted to the connection between integrability of a finite quantum system and degeneracies of its energy levels. In particular, we analyse in detail the energy spectra of finite Hubbardâ€¦ (More)

The paper is devoted to the study of the effects due to superconducting pairing in small metallic grains. We explicitly determine the low-energy spectrum of the problem at strong superconductingâ€¦ (More)

We determine the limiting dynamics of a fermionic condensate following a sudden perturbation for various initial conditions. Possible initial states of the condensate fall into two classes. In theâ€¦ (More)

The problem of electronâ€“electron lifetime in a quantum dot is studied beyond perturbation theory by mapping it onto the problem of localization in the Fock space. We identify two regimes, localizedâ€¦ (More)

J. A. Folk, C. M. Marcus, R. Berkovits, I. L .Kurland, I. L. Aleiner, B. L. Altshuler 1 Department of Physics, Harvard University, Cambridge, MA 02138 2 Department of Physics, Stanford University,â€¦ (More)

Emil A. Yuzbashyan,1 Vadim B. Kuznetsov,2 and Boris L. Altshuler3 1Center for Materials Theory, Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, USA 2Departmentâ€¦ (More)