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77 papers · 1 filter
Hubbard ladders in a magnetic field
D. C. Cabra, A. De Martino, P. Pujol +1
The behavior of a two leg Hubbard ladder in the presence of a magnetic field is studied by means of Abelian bosonization. We predict the appearance of a new (doping dependent) plat…
Mechanisms of Spontaneous Current Generation in an Inhomogeneous d-Wave Superconductor
M. H. S. Amin, A. N. Omelyanchouk, A. M. Zagoskin
A boundary between two d-wave superconductors or an s-wave and a d-wave superconductor generally breaks time-reversal symmetry and can generate spontaneous currents due to proximit…
A generalised inductive approach to the lace expansion
Remco van der Hofstad, Gordon Slade
The lace expansion is a powerful tool for analysing the critical behaviour of self-avoiding walks and percolation. It gives rise to a recursion relation which we abstract and study…
String Theory in Electromagnetic Fields
J. Ambjorn, Y. M. Makeenko, G. W. Semenoff +1
A review of various aspects of superstrings in background electromagnetic fields is presented. Topics covered include the Born-Infeld action, spectrum of open strings in background…
Domain walls of high-density QCD
D. T. Son, M. A. Stephanov, A. R. Zhitnitsky
We show that in very dense quark matter there must exist metastable domain walls where the axial U(1) phase of the color-superconducting condensate changes by 2pi. The decay rate o…
Detecting the Kondo screening cloud around a quantum dot
Ian Affleck, Pascal Simon
A fundamental prediction of scaling theories of the Kondo effect is the screening of an impurity spin by a cloud of electrons spread out over a mesoscopic distance. This cloud has…