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Trace anomaly and dimension two gluon condensate above the phase transition

✍ Scribed by E. Megías; E. R. Arriola; L. L. Salcedo

Book ID
107679935
Publisher
Springer-Verlag
Year
2011
Tongue
English
Weight
331 KB
Volume
85
Category
Article
ISSN
0019-5480

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Excitons in two dimensions: the excitati
Excitons in two dimensions: the excitation spectrum and phase transition to superfluidity
✍ Z.G. Koinov 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 85 KB

The Bethe-Salpeter equation for two-dimensional excitons is solved in the low-density limit. The analysis of the collective modes leads to a spectrum of the Bogolubov type. It was found that the critical temperature of the Kosterlitz-Thouless phase transition to exciton superfluidity scales linearly