Quantum electrodynamics in finite volume and nonrelativistic effective field theories

8 LaTeX pages, 2 figuresInternational audienceElectromagnetic effects are increasingly being accounted for in lattice quantum chromodynamics computations. Because of their long-range nature, they lead to large finite-size effects over which it is important to gain analytical control. Nonrelativistic effective field theories provide an efficient tool to describe these effects. Here we argue that some care has to be taken when applying these methods to quantum electrodynamics in a finite volume

Spectra of heavy-light and heavy-heavy mesons containing charm quarks, including higher spin states for Nf=2+1

We study the spectra of heavy-light and heavy-heavy mesons containing charm quarks, including higher spin states. We use two sets of Nf=2+1 gauge configurations, one set from QCDSF using SLiNC action, and the other configurations from the Budapest-Marseille-Wuppertal collaboration, using the HEX smeared clover action. To extract information about the excited states, we choose a suitable basis of operators to implement the variational method.G. Bali, S. Collins, S. Dürr, Z. Fodor, R. Horsley, C. Hoelbling, S.D. Katz, I. Kanamori, S. Krieg, T. Kurth, L. Lellouch, T. Lippert, C. McNeile, Y. Nakamura, D. Pleiter, P. Pérez-Rubio, P. Rakow, A. Schäfer, G. Schierholz, K. Szabo, F. Winter and J. Zanottihttp://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=13

How to manage refractory intracranial hypertension?

Intracranial hypertension is one of the major causes of secondary injury in traumatic brain injury leading to a significant burden of morbidity and mortality. We here present a review of available therapies for the treatment of refractory intracranial hypertension that is defined as an intracranial hypertension that does not respond to the firstline therapies. Second-line therapies that are available for the treatment of refractory intracranial hypertension include mild induced hypothermia, inotropes, and vasopressors for the control of cerebral perfusion pressure, transient hyperventilation, barbiturates, and decompressive craniectomy. Apart from decompressive craniectomy, these therapies are supported by the last guidelines published by the Brain Trauma Foundation (BTF). However, the level of evidence supporting them is low to moderate. This is probably partly explained by the fact that traumatic brain injury is extremely heterogeneous and requires multimodal and individualised care, which makes randomised clinical trials difficult to set up. On-going studies like those conducted on induced hypothermia (EUROTHERM3235) and on decompressive craniectomy (RESCUEicp) may lead to new perspectives for the management of patients suffering from refractory intracranial hypertension