We compare the evolution of entanglement for a system of two two-level atoms interacting with (i) a common reservoir being in the vacuum state and (ii) a common thermal reservoir at non-zero temperature. The Markovian master equation is used to describe the evolution of entanglement which is quantified by concurrence. Phenomena of sudden death, revival, and sudden birth of entanglement are disc...

We discuss a simple model for creation of entanglement in a system composed of two two-level atoms interacting with a common environment. The role of the environment in entangling and disentangling of the atoms is explored. We demonstrate how the spontaneous decay of an initial excitation of the system can create a transient entanglement between the atoms. The opposite situation is also discuss...

We report our first results of monitoring sudden ionospheric disturbances (SID). We present data taken continuously for two weeks during 20th Sept. 2002 and 4th Oct. 2002. We compare the effects of solar flares of the VLF signal with those obtained by GOES Satellite of NASA monitoring in X-rays and found excellent agreement.

Two girls with asthma died suddenly in autumn-winter 1985. On clinical criteria, both had been classified as moderately severe asthmatics, had shown a stabilised disease course, and had complied with antiasthmatic medication. By chance, lung function, bronchial reactivity, and subjective perception of lung function impairment had been assessed five and a half months and one month before death, ...

The association between Long QT syndrome (LQTS) and sudden infant death syndrome (SIDS) remains highly topical and even polarizing. Because the landmark Italian study of the QT interval and SIDS triggered extensive controversy, there has been a substantial and commendable effort to establish LQTS as one of the true causes of SIDS. The motivation underlying this effort is based on the fact that ...

Sudden death is defined as any death that occurs less than 24 hours after the onset of first symptoms. Strokes account for 10 to 20% of all sudden deaths. The records of all residents of Rochester, Minn., who had their first stroke during the period 1955 through 1969 were analyzed. Among 255 deaths caused by the first stroke, 52 were sudden. Twenty-six of the deaths were due to primary intracer...

For a journal’s success, the impact factor remains—in spite of many concerns with this type of quality measurement—an important aspect. The quality of submitted papers is closely related to this magic number, since authors decide at least in part on where to submit based on the impact factor of a journal. The current editorial team took over the European Heart Journal in 2009 with an impact fac...

Why are we not doing more to prevent sudden unexpected cardiac death? Why is prevention of the principal cause of death occurring during acute myocardial ischaemia and impending myocardial infarction ignored? The majority are caused by ventricular fibrillation. This is most common within the first hour after the onset of an acute coronary syndrome and occurs with decreasing frequency thereafter...

The diagnosis of epilepsy carries an excess mortality risk which is highest during the first 10 years following diagnosis, particularly during the first 2 year& 2. Some of this may be related to suicide37 4 or accident5-7. Convulsive status epilepticus as a cause of death in people with a diagnosis of epilepsy seems to be a relatively rare phenomenon from childhood until middle adult life, alth...