Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Peysson, S."'
Autor:
Peysson, S.
The Haldane-Shastry spin chain can be mapped to the infinite coupling limit of the SU(2) spin Calogero-Sutherland model. We use the $\mathfrak{gl}_2$ Jack polynomials' technology to compute the form factors of the spin operator on the multi-spinon sp
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302333
Autor:
Mélin, R., Peysson, S.
Publikováno v:
Phys. Rev. B 68, 174515 (2003)
We investigate several factors controlling the physics of hybrid structures involving ferromagnetic domain walls (DWs) and superconducting (S) metals. We discuss the role of non collinear magnetizations in S/DW junctions in a spin $\otimes$ Nambu $\o
Externí odkaz:
http://arxiv.org/abs/cond-mat/0302236
We derive non equilibrium statistical ensembles for a ballistic Aharonov-Bohm loop connected to several electrodes connected to reservoirs with different chemical potentials. A striking consequence of these non trivial ensembles is the emergence of q
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208469
Publikováno v:
J. Phys.: Condens. Matter 15 (2003) 5591-5598
We propose toy models of crossed Andreev reflection in multiterminal hybrid structures containing out-of-equilibrium conductors. We apply the description to two possible experiments: (i) to a device containing a large quantum dot inserted in a crosse
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207036
Autor:
Peysson, S., Schoutens, K.
Publikováno v:
J.Phys.A35:6471-6488,2002
The excitation spectrum of specific conformal field theories (CFT) with central charge $c=1$ can be described in terms of quasi-particles with charges $Q=-p,+1$ and fractional statistics properties. Using the language of Jack polynomials, we compute
Externí odkaz:
http://arxiv.org/abs/cond-mat/0205128
Autor:
Bramwell, S. T., Fortin, J. -Y., Holdsworth, P. C. W., Peysson, S., Pinton, J. -F., Portelli, B., Sellitto, M.
Publikováno v:
Phys. Rev. E 63 (2001) 041106.
We study the probability density function for the fluctuations of the magnetic order parameter in the low temperature phase of the XY model of finite size. In two-dimensions this system is critical over the whole of the low temperature phase. It is s
Externí odkaz:
http://arxiv.org/abs/cond-mat/0008093
Publikováno v:
Phys.Rev.Lett.85(2000)4791-4794
The magnetization behavior of q-periodic antiferromagnetic spin 1/2 Heisenberg chains under uniform magnetic fields is investigated in a background of disorder exchange distributions. By means of both real space decimation procedures and numerical di
Externí odkaz:
http://arxiv.org/abs/cond-mat/0007205
Autor:
Degiovanni, P., Peysson, S.
Schrodinger cat states built from quantum superpositions of left or right Luttinger fermions located at different positions in a spinless Luttinger liquid are considered. Their decoherence rates are computed within the bosonization approach using as
Externí odkaz:
http://arxiv.org/abs/cond-mat/0001452
Autor:
Degiovanni, P., Peysson, S.
Using its Conformal Field Theory description, the Luttinger liquid is coupled to the quantum electromagnetic field. We compute the decoherence properties of a superposition of two states obtained by creating the same elementary excitation at differen
Externí odkaz:
http://arxiv.org/abs/cond-mat/9905253
Autor:
Mélin, R., Peysson, S.
A Bethe-Peierls treatment to dilution in frustrated magnets and spin liquids is given. A spin glass phase is present at low temperatures and close to the percolation point as soon as frustration takes a finite value in the dilute magnet model; the sp
Externí odkaz:
http://arxiv.org/abs/cond-mat/9904432