dc.contributor.author |
Benet, L |
|
dc.contributor.author |
Hernández-Quiroz, S |
|
dc.date.accessioned |
2011-01-22T10:25:43Z |
|
dc.date.available |
2011-01-22T10:25:43Z |
|
dc.date.issued |
2010 |
|
dc.identifier.issn |
1539-3755 |
|
dc.identifier.uri |
http://hdl.handle.net/11154/2180 |
|
dc.description.abstract |
We study the nearest-neighbor distributions of the k-body embedded ensembles of random matrices for n bosons distributed over two-degenerate single-particle states. This ensemble, as a function of k, displays a transition from harmonic-oscillator behavior (k = 1) to random-matrix-type behavior (k = n). We show that a large and robust quasidegeneracy is present for a wide interval of values of k when the ensemble is time-reversal invariant. These quasidegenerate levels are Shnirelman doublets which appear due to the integrability and time-reversal invariance of the underlying classical systems. We present results related to the frequency in the spectrum of these degenerate levels in terms of k and discuss the statistical properties of the splittings of these doublets. |
en_US |
dc.language.iso |
en |
en_US |
dc.title |
Nearest-neighbor distributions and tunneling splittings in interacting many-body two-level boson systems |
en_US |
dc.type |
Article |
en_US |
dc.identifier.idprometeo |
243 |
|
dc.identifier.doi |
10.1103/PhysRevE.81.036218 |
|
dc.source.novolpages |
81(3) |
|
dc.subject.wos |
Physics, Fluids & Plasmas |
|
dc.subject.wos |
Physics, Mathematical |
|
dc.description.index |
WoS: SCI, SSCI o AHCI |
|
dc.relation.journal |
Physical Review E |
|