Z_{3} Parafermion in the Double Charge Kondo Model.

Quantum impurity models with frustrated Kondo interactions can support quantum critical points with fractionalized excitations. Recent experiments [W. Pouse et al.

Shot noise in the self-dual interacting resonant level model.

By using two independent and complementary approaches, we compute exactly the shot noise in an out-of-equilibrium interacting impurity model, the interacting resonant level model at its self-dual point. An analytical approach based on the thermodynamical Bethe ansatz allows us to obtain the density matrix in the presence of a bias voltage, which in turn allows for the computation of any observable. A time-dependent density matrix renormalization group technique that has proven to yield the correct result for a free model (the resonant level model) is shown to be in perfect agreement with the former method.

Twofold advance in the theoretical understanding of far-from-equilibrium properties of interacting nanostructures.

We calculate the full I-V characteristics at vanishing temperature in the self-dual interacting resonant level model in two ways. The first uses careful time dependent density matrix renormalization group with a large number of states per block and a representation of the reservoirs as leads subjected to a chemical potential. The other is based on integrability in the continuum limit, and generalizes early work by Fendley, Ludwig, and Saleur on the boundary sine-Gordon model.

Confinement and superfluidity in one-dimensional degenerate fermionic cold atoms.

The physical properties of arbitrary half-integer spins F = N - (1/2) fermionic cold atoms trapped in a one-dimensional optical lattice are investigated by means of a low-energy approach. Two different superfluid phases are found for F > or = (3/2) depending on whether a discrete symmetry is spontaneously broken or not: an unconfined BCS pairing phase and a confined molecular-superfluid instability made of 2N fermions. We propose an experimental distinction between these phases for a gas trapped in an annular geometry.

[The jugulotympanic paragangliomas: 41 cases report].

Objective: The jugulotympanic paragangliomas (JTP) represents the most frequent tumour of the middle ear but also of the temporal bone, after the acoustic neurinoma. The management of these vascular tumours remains uncleared. The purpose of this study was to report our experience about JTP in the CHU of Grenoble.

[Cavernous angiomas of the brain stem: auditory and vestibular manifestations].

Aims: To establish the correlation between the clinical manifestations of hearing and balance disturbance and the anatomical site within the pons of cavernous angiomas, and to describe their clinical features, and the findings on ABR and MRI.

Materials And Methods: Two clinical cases of cavernous angioma with cochlear and vestibular manifestations underwent audiometric evaluation, with VNG and ABR as well as CT and MRI scans.

Conclusion: Cavernous angiomas are rare (less than 2% of intra-cranial space-occupying lesions).

[Gadolinium and contrast medium MRI of the acoustic nerve in patients with meningeal neuritis and acoustico-facial syndrome].

Twelve cases of vestibular neuritis were investigated in gradient echo MRI with gadolinium. Only 3 severe cases associated with an acoustico facial syndrome (2 cases of herpes zoster oticus and one case after influenzae) demonstrated focal enhancement within the internal auditory canal on post contrast T1 weighted images. This enhancement involved at least 2 differents nerves.

[Hemorrhagic complications of lower turbinectomy].

Concerning 52 inferior turbinectomies, the authors analyse the haemorrhagic complications of these surgical operations. They deplore 4% of serious haemorrhages. These ones may immediately occur during the surgical operation or in the next 15 days.