8 research outputs found
Some Algebraic Aspects of the Inhomogeneous Six-Vertex Model
The inhomogeneous six-vertex model is a 2 multiparametric integrable
statistical system. In the scaling limit it is expected to cover different
classes of critical behaviour which, for the most part, have remained
unexplored. For general values of the parameters and twisted boundary
conditions the model possesses invariance. In this paper we
discuss the restrictions imposed on the parameters for which additional global
symmetries arise that are consistent with the integrable structure. These
include the lattice counterparts of , and as
well as translational invariance. The special properties of the lattice system
that possesses an additional invariance are considered. We also
describe the Hermitian structures, which are consistent with the integrable
one. The analysis lays the groundwork for studying the scaling limit of the
inhomogeneous six-vertex model.Comment: 29 pages, 2 figures; minor typos fixed, references added, published
versio
Scaling limit of the invariant inhomogeneous six-vertex model
The work contains a detailed study of the scaling limit of a certain
critical, integrable inhomogeneous six-vertex model subject to twisted boundary
conditions. It is based on a numerical analysis of the Bethe ansatz equations
as well as the powerful analytic technique of the ODE/IQFT correspondence. The
results indicate that the critical behaviour of the lattice system is described
by the gauged WZW model with certain boundary and reality
conditions imposed on the fields. Our proposal revises and extends the
conjectured relation between the lattice system and the Euclidean black hole
non-linear sigma model that was made in the 2011 paper of Ikhlef, Jacobsen and
Saleur.Comment: 152 pages, 26 figures, 5 tables, minor misprints correcte
Cardiovascular Risk Reduction with Icosapent Ethyl for Hypertriglyceridemia
BACKGROUND
Patients with elevated triglyceride levels are at increased risk for ischemic events. Icosapent
ethyl, a highly purified eicosapentaenoic acid ethyl ester, lowers triglyceride levels, but data
are needed to determine its effects on ischemic events.
METHODS
We performed a multicenter, randomized, double-blind, placebo-controlled trial involving
patients with established cardiovascular disease or with diabetes and other risk factors, who
had been receiving statin therapy and who had a fasting triglyceride level of 135 to 499 mg
per deciliter (1.52 to 5.63 mmol per liter) and a low-density lipoprotein cholesterol level of
41 to 100 mg per deciliter (1.06 to 2.59 mmol per liter). The patients were randomly assigned
to receive 2 g of icosapent ethyl twice daily (total daily dose, 4 g) or placebo. The primary
end point was a composite of cardiovascular death, nonfatal myocardial infarction, nonfatal
stroke, coronary revascularization, or unstable angina. The key secondary end point was a
composite of cardiovascular death, nonfatal myocardial infarction, or nonfatal stroke.
RESULTS
A total of 8179 patients were enrolled (70.7% for secondary prevention of cardiovascular
events) and were followed for a median of 4.9 years. A primary end-point event occurred in
17.2% of the patients in the icosapent ethyl group, as compared with 22.0% of the patients
in the placebo group (hazard ratio, 0.75; 95% confidence interval [CI], 0.68 to 0.83; P<0.001);
the corresponding rates of the key secondary end point were 11.2% and 14.8% (hazard ratio,
0.74; 95% CI, 0.65 to 0.83; P<0.001). The rates of additional ischemic end points, as assessed
according to a prespecified hierarchical schema, were significantly lower in the icosapent
ethyl group than in the placebo group, including the rate of cardiovascular death (4.3% vs.
5.2%; hazard ratio, 0.80; 95% CI, 0.66 to 0.98; P=0.03). A larger percentage of patients in
the icosapent ethyl group than in the placebo group were hospitalized for atrial fibrillation
or flutter (3.1% vs. 2.1%, P=0.004). Serious bleeding events occurred in 2.7% of the patients
in the icosapent ethyl group and in 2.1% in the placebo group (P=0.06).
CONCLUSIONS
Among patients with elevated triglyceride levels despite the use of statins, the risk of ischemic events, including cardiovascular death, was significantly lower among those who received 2 g of icosapent ethyl twice daily than among those who received placebo. (Funded
by Amarin Pharma; REDUCE-IT ClinicalTrials.gov number, NCT01492361
Scaling limit of the invariant inhomogeneous six-vertex model
The work contains a detailed study of the scaling limit of a certain critical, integrable inhomogeneous six-vertex model subject to twisted boundary conditions. It is based on a numerical analysis of the Bethe ansatz equations as well as the powerful analytic technique of the ODE/IQFT correspondence. The results indicate that the critical behaviour of the lattice system is described by the gauged WZW model with certain boundary and reality conditions imposed on the fields. Our proposal revises and extends the conjectured relation between the lattice system and the Euclidean black hole non-linear sigma model that was made in the 2011 paper of Ikhlef, Jacobsen and Saleur
Some algebraic aspects of the inhomogeneous six-vertex model
The inhomogeneous six-vertex model is a 2D multiparametric integrable statistical system. In the scaling limit it is expected to cover different classes of critical behaviour which, for the most part, have remained unexplored. For general values of the parameters and twisted boundary conditions the model possesses invariance. In this paper we discuss the restrictions imposed on the parameters for which additional global symmetries arise that are consistent with the integrable structure. These include the lattice counterparts of , and as well as translational invariance. The special properties of the lattice system that possesses an additional invariance are considered. We also describe the Hermitian structures, which are consistent with the integrable one. The analysis lays the groundwork for studying the scaling limit of the inhomogeneous six-vertex model
Scaling limit of the invariant inhomogeneous six-vertex model
The work contains a detailed study of the scaling limit of a certain critical, integrable inhomogeneous six-vertex model subject to twisted boundary conditions. It is based on a numerical analysis of the Bethe ansatz equations as well as the powerful analytic technique of the ODE/IQFT correspondence. The results indicate that the critical behaviour of the lattice system is described by the gauged WZW model with certain boundary and reality conditions imposed on the fields. Our proposal revises and extends the conjectured relation between the lattice system and the Euclidean black hole non-linear sigma model that was made in the 2011 paper of Ikhlef, Jacobsen and Saleur