| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000382341 |
| ISSN: | 0103-9733 |
| Authors: | Bagrov, V.G1 Gitman, D.M2 Pereira, A.S3 |
| Institutions: | 1Tomsk State University, Department of Physics, Tomsk. Rusia 2Russian Academy of Sciences, P.N. Lebedev Physical Institute, Moscú. Rusia 3Universidade de Sao Paulo, Insituto de Fisica, Sao Paulo. Brasil |
| Year: | 2015 |
| Season: | Jun |
| Volumen: | 45 |
| Number: | 3 |
| Pages: | 369-375 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | Different families of generalized coherent states (CS) for one-dimensional systems with general timedependent quadratic Hamiltonian are constructed. In principle, all known CS of systems with quadratic Hamiltonian are members of these families. Some of the constructed generalized CS are close enough to the well-known due to Schrodinger and Glauber CS of a harmonic oscillator; we ¨ call them simply CS. However, even among these CS, there exist different families of complete sets of CS. These families differ by values of standard deviations at the initial time instant. According to the values of these initial standard deviations, one can identify some of the families with semiclassical CS. We discuss properties of the constructed CS, in particular, completeness relations, minimization of uncertainty relations and so on. As a unknown application of the general construction, we consider different CS of an oscillator with a time dependent frequency |
| Disciplines: | Física y astronomía |
| Keyword: | Física de partículas y campos cuánticos, Estados coherentes |
| Keyword: | Physics and astronomy, Particle physics and quantum fields, Coherent states |
| Full text: | Texto completo (Ver HTML) |
