Quark mass density- and temperature- dependent model for strange quark matter

It is found that the radius of a stable strangelet decreases as the temperature increases in a quark mass density-dependent model. To overcome this difficulty, we extend this model to a quark mass density- and temperature- dependent model in which the vacuum energy density at zero baryon density limit B depends on temperature. An ansatz is introduced and the regions for the best choice of the parameters are studied.Comment: 5 pages, 4 figure

On the Vacuum State of Relativistic Quantum Field Theories

<p>A Lorentz invariant vacuum theory for quantum field theories is proposed based on causal symmetric representation of relativistic quantum fields.</p&gt

Quantitative Structure–Activity Relationship for High Affinity 5‑HT_1A Receptor Ligands Based on Norm Indexes

Arylpiperazine derivatives are promising 5-hydroxytryptamine (5-HT) receptor ligands which can inhibit serotonin reuptake effectively. In this work, some norm index descriptors were proposed and further utilized to develop a model for predicting 5-HT_1A receptor affinity (p<i>K</i>_i) of 88 arylpiperazine derivatives. Results showed that this new model could provide satisfactory predictions with the square of the correction coefficient (<i>R</i>²) of 0.8891 and the squared correlation coefficient of cross-validation (<i>Q</i>²) of 0.8082, respectively. In addition, the applicability domain of this model was validated by using the leverage approach and results which suggested potential large scale for further utilization of this model. The results of statistical values and validation tests demonstrated that our proposed norm index based model could be successfully applied for predicting the affinity 5-HT_1A receptor ligands of arylpiperazine derivatives