80 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of LisbonPT22 papers
- Instituto Superior TécnicoPT18 papers
- Universidade Nova de LisboaPT5 papers
- Universidade AbertaPT4 papers
- University of MazandaranIR4 papers
- Fundação para a Ciência e TecnologiaPT3 papers
- Ulyanovsk State UniversityRU3 papers
- University of AveiroPT3 papers
- University of DenverUS3 papers
- University of St AndrewsGB3 papers
- University of Mary WashingtonUS2 papers
- Buein Zahra Technical UniversityIR1 paper
3 papers · 1 filter
Trigonometric identities, angular Schrödinger equations and a new family of solvable models
Vit Jakubsky, Miloslav Znojil, Euclides Augusto Luis +1
Angular parts of certain solvable models are studied. We find that an extension of this class may be based on suitable trigonometric identities. The new exactly solvable Hamiltonia…
Quantum Holonomies in (2+1)-Dimensional Gravity
J. E. Nelson, R. F. Picken
We describe an approach to the quantization of (2+1)--dimensional gravity with topology R x T^2 and negative cosmological constant, which uses two quantum holonomy matrices satisfy…
Parasupersymmetric Quantum Mechanics of Order 3 and a Generalized Witten Index
Marko Stosic, Roger Picken
In this paper we generalize the Rubakov-Spiridonov parasupersymmetry algebra to the order 3 case. We also generalize the notion of the Witten index, and we provide a class of model…