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Part of the book series: Lecture Notes in Physics ((LNP,volume 884))

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Abstract

Going beyond the embedded ensembles considered in Chaps. 412, various other physically relevant extended embedded ensembles, that are explored analytically to a very limited extent in literature and studied numerically in some detail, are briefly described. These are: (i) EGOE(1+2)-(j 1,j 2,…,j r :J) ensemble with fermions in j-orbits and Hamiltonians preserving many fermion angular momentum J symmetry as appropriate for atoms and atomic nuclei; (ii) BEGOE(1+2)-( 1, 2,…, r :L) ensembles for interacting boson systems with bosons in -orbits and preserving many boson angular momentum L; (iii) Partitioned EGOE and K+EGOE ensembles considered in nuclear structure.

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References

  1. I. Talmi, Simple Models of Complex Nuclei: The Shell Model and Interacting Boson Model (Harwood Academic Publishers, Chur, 1993)

    Google Scholar 

  2. J.B. French, E.C. Halbert, J.B. McGrory, S.S.M. Wong, Complex spectroscopy, in Advances in Nuclear Physics, vol. 3, ed. by M. Baranger, E. Vogt (Plenum, New York, 1969), pp. 193–257

    Chapter  Google Scholar 

  3. P.J. Brussaard, P.W.M. Glaudemans, Shell Model Applications in Nuclear Spectroscopy (North-Holland, Amsterdam, 1977)

    Google Scholar 

  4. B.A. Brown, W.D.M. Rae, Nushell@MSU, MSU-NSCL Report (2007)

    Google Scholar 

  5. E. Caurier, F. Nowacki, Present status of shell model techniques. Acta Phys. Pol. B 30, 705–714 (1999)

    ADS  Google Scholar 

  6. V.V. Flambaum, A.A. Gribakina, G.F. Gribakin, M.G. Kozlov, Structure of compound states in the chaotic spectrum of the Ce atom: localization properties, matrix elements, and enhancement of weak perturbations. Phys. Rev. A 50, 267–296 (1994)

    Article  ADS  Google Scholar 

  7. V.V. Flambaum, A.A. Gribakina, G.F. Gribakin, I.V. Ponomarev, Quantum chaos in many-body systems: what can we learn from the Ce atom. Physica D 131, 205–220 (1999)

    Article  ADS  MATH  Google Scholar 

  8. D. Angom, V.K.B. Kota, Signatures of two-body random matrix ensembles in Sm I. Phys. Rev. A 67, 052508 (2003)

    Article  ADS  Google Scholar 

  9. T.A. Brody, J. Flores, J.B. French, P.A. Mello, A. Pandey, S.S.M. Wong, Random matrix physics: spectrum and strength fluctuations. Rev. Mod. Phys. 53, 385–479 (1981)

    Article  ADS  MathSciNet  Google Scholar 

  10. J.M.G. Gómez, K. Kar, V.K.B. Kota, R.A. Molina, A. Relaño, J. Retamosa, Many-body quantum chaos: recent developments and applications to nuclei. Phys. Rep. 499, 103–226 (2011)

    Article  ADS  MathSciNet  Google Scholar 

  11. V. Zelevinsky, B.A. Brown, N. Frazier, M. Horoi, The nuclear shell model as a testing ground for many-body quantum chaos. Phys. Rep. 276, 85–176 (1996)

    Article  ADS  MathSciNet  Google Scholar 

  12. T. Papenbrock, H.A. Weidenmüller, Random matrices and chaos in nuclear spectra. Rev. Mod. Phys. 79, 997–1013 (2007)

    Article  ADS  MATH  Google Scholar 

  13. P. Papenbrock, H.A. Weidenmüller, Two-body random ensemble in nuclei. Phys. Rev. C 73, 014311 (2006)

    Article  ADS  Google Scholar 

  14. S. Sahoo, G.F. Gribakin, V. Dzuba, Recombination of low energy electrons with U28+, arXiv:physics/0401157v1 [physics.atom-ph]

  15. D. Angom, V.K.B. Kota, Chaos and localization in the wavefunctions of complex atoms NdI, PmI and SmI. Phys. Rev. A 71, 042504 (2005)

    Article  ADS  Google Scholar 

  16. V.K.B. Kota, R.U. Haq, Spectral Distributions in Nuclei and Statistical Spectroscopy (World Scientific, Singapore, 2010)

    Book  Google Scholar 

  17. V.K.B. Kota, Bivariate distributions in statistical spectroscopy studies: I. Fixed-J level densities, fixed-J averages and spin cut-off factors. Z. Phys. A 315, 91–98 (1984)

    Article  ADS  Google Scholar 

  18. V.K.B. Kota, M. Vyas, K.B.K. Mayya, Spectral distribution analysis of random interactions with J-symmetry and its extensions. Int. J. Mod. Phys. E 17(Supp), 318–333 (2008)

    Article  ADS  Google Scholar 

  19. M. Vyas, Some studies on two-body random matrix ensembles, Ph.D. Thesis, M.S. University of Baroda, India (2012)

    Google Scholar 

  20. D. Mulhall, A. Volya, V. Zelevinsky, Geometric chaoticity leads to ordered spectra for randomly interacting fermions. Phys. Rev. Lett. 85, 4016–4019 (2000)

    Article  ADS  Google Scholar 

  21. D. Mulhall, Quantum chaos and nuclear spectra, Ph.D. Thesis, Michigan State University, East Lansing, USA (2002)

    Google Scholar 

  22. T. Papenbrock, H.A. Weidenmüller, Distribution of spectral widths and preponderance of spin-0 ground states in nuclei. Phys. Rev. Lett. 93, 132503 (2004)

    Article  ADS  Google Scholar 

  23. A. Volya, Emergence of symmetry from random n-body interactions. Phys. Rev. Lett. 100, 162501 (2008)

    Article  ADS  Google Scholar 

  24. M. Vyas, Random interaction matrix ensembles in mesoscopic physics, in Proceedings of the National Seminar on New Frontiers in Nuclear, Hadron and Mesoscopic Physics, ed. by V.K.B. Kota, A. Pratap (Allied Publishers, New Delhi, 2010), pp. 23–37

    Google Scholar 

  25. D. Kusnezov, Two-body random ensembles: from nuclear spectra to random polynomials. Phys. Rev. Lett. 85, 3773–3776 (2000)

    Article  ADS  Google Scholar 

  26. O. Scholten, The Program Package PHINT, KVI Report (University of Groningen, 1990). https://www.kvi.nl/scholten/

  27. Y.D. Devi, V.K.B. Kota, Fortran programmes for spectroscopic calculations in (sdg)—boson space: the package SDGIBM1, Physical Research Laboratory (Ahmedabad, India), Technical Report PRL-TN-90-68 (1990)

    Google Scholar 

  28. D.F. Kusnezov, Nuclear collective quadrupole-octupole excitations in the U(16) spdf interacting boson model, Ph.D. Thesis, Yale University, USA (1988)

    Google Scholar 

  29. T. Otsuka, N. Yoshida, Users’s manual of program NPBOS, Japan Atomic Energy Research Institute, Report JAERI-M/85-094 (1985)

    Google Scholar 

  30. V.K.B. Kota, Two-body ensembles with group symmetries for chaos and regular structures. Int. J. Mod. Phys. E 15, 1869–1883 (2006)

    Article  ADS  Google Scholar 

  31. J.B. French, V.K.B. Kota, Nuclear level densities and partition functions with interactions. Phys. Rev. Lett. 51, 2183–2186 (1983)

    Article  ADS  MathSciNet  Google Scholar 

  32. J.B. French, in Mathematical and Computational Methods in Nuclear Physics, ed. by J.S. Dehesa, J.M.G. Gomez, A. Polls (Springer, Berlin, 1984), pp. 100–121

    Chapter  Google Scholar 

  33. V.K.B. Kota, D. Majumdar, R. Haq, R.J. Leclair, Shell model tests of the bimodal partial state densities in a 2×2 partitioned embedded random matrix ensemble. Can. J. Phys. 77, 893–901 (1999)

    Article  ADS  Google Scholar 

  34. Z. Pluhar̆, H.A. Weidenmüller, Approximation for shell-model level densities. Phys. Rev. C 38, 1046–1057 (1988)

    Article  ADS  Google Scholar 

  35. B. Georgeot, D.L. Shepelyansky, Breit-Wigner width and inverse participation ratio in finite interacting Fermi systems. Phys. Rev. Lett. 79, 4365–4368 (1997)

    Article  ADS  Google Scholar 

  36. X. Leyronas, J. Tworzydlo, C.W.J. Beenakker, Non-Cayley-tree model for quasiparticle decay in a quantum dot. Phys. Rev. Lett. 82, 4894–4897 (1999)

    Article  ADS  Google Scholar 

  37. B.L. Altshuler, Y. Gefen, A. Kamenev, L.S. Levitov, Quasiparticle lifetime in a finite system: a nonperturbative approach. Phys. Rev. Lett. 78, 2803–2806 (1997)

    Article  ADS  Google Scholar 

  38. C. Mejía-Monasterio, J. Richert, T. Rupp, H.A. Weidenmüller, Properties of low-lying states in a diffusive quantum dot and Fock-space localization. Phys. Rev. Lett. 81, 5189–5192 (1998)

    Article  ADS  Google Scholar 

  39. V.K.B. Kota, Embedded random matrix ensembles for complexity and chaos in finite interacting particle systems. Phys. Rep. 347, 223–288 (2001)

    Article  ADS  MATH  MathSciNet  Google Scholar 

  40. A. Cortes, R.U. Haq, A.P. Zuker, Transition between random and collective behaviour in spectra generated by two-body forces. Phys. Lett. B 115, 1–6 (1982)

    Article  ADS  Google Scholar 

  41. V. Velázquez, A.P. Zuker, Spectroscopy with random and displaced random ensembles. Phys. Rev. Lett. 88, 072502 (2002)

    Article  ADS  Google Scholar 

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Kota, V.K.B. (2014). Further Extended Embedded Ensembles. In: Embedded Random Matrix Ensembles in Quantum Physics. Lecture Notes in Physics, vol 884. Springer, Cham. https://doi.org/10.1007/978-3-319-04567-2_13

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