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  4. Vasile Victor Birsan

Vasile Victor Birsan

DFT

3412 / 0214042334

vbarsan@theory.nipne.ro

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63

Scientific Articles

15

Conferences

15

Books

.

Patents

  1. An improved algorithm for solving the quintic equation
    2. Victor Barsan

    Romanian Reports in Physics 74 (2022) 117

  2. V. Barsan: A new quantum - classical analogy: position-dependent carriers in quantum wells and transverse modes in heterostructure lasers, Rom. J. Physics 67 (2022) 109
    3. Victor Barsan

    Rom. J. Physics 67 (2022) 109

  3. Critical behavior of an anharmonic nanoscopic solid
    4. V. Barsan

    Romanian Reports in Physisics 73 (2021) 501 14pp

  4. Garrett approximation revisited
    5. V. Barsan

    European Journal of Physics 41 (2020) 025404 (13pp)

  5. Inverses of Langevin, Brillouin and related functions: a status report
    6. V. Barsan

    Romanian Reports in Physics

  6. Garrett approximation revisited
    7. V. Barsan

    arXiv 1906.05697v1[quant-ph]

  7. Inverse Langevin and Brillouin functions: mathematical properties and physical applications
    8. V. Barsan

    arXiv 1902.07641 physics.gen-ph

  8. Simple and accurate approximants of inverse Brillouin functions
    9. V. Barsan

    Journal of Magnetism and Magnetic Materials 473 (2019) 399-402, https://doi.org/10.1016/j.jmmm.2018.10.058

  9. Garrett approximation for asymmetric rectangular potentials and its applications to quantum well infrared photodetectors
    10. Victor Barsan

    arXiv:1805.05804v1 (2018) [physics.gen-phys]; DOI: 10.13140/RG.2.2.18395.87843

  10. Siewert solutions of transcendental equations, generalized Lambert functions and physical applications
    11. Victor Barsan

    Open Physics

  11. Exact and approximate analytical solutions of Weiss equation of ferromagnetism and their experimental relevance
    12. Victor Barsan, Victor Kuncser

    arXiv:1702.07225

  12. Exact and approximate analytical solutions of Weiss equation of ferromagnetism and their experimental relevance
    13. Victor Barsan, and Victor Kuncser

    Philosophical Magazine Letters, DOI 10.1080/09500839.2017.1366081,vol. 97, no. 9, pp. 359-371

  13. Semiconductor quantum wells with BenDaniel–Duke boundary conditions: approximate analytical results
    14. V. Barsan, M.-C. Ciornei

    Eur.J.Phys. 38 (2017) 015407 (22pp)

  14. Siewert solutions of transcendental equations, generalized Lambert functions and physical applications
    15. Victor Barsan

    arXiv:1703.10052v1

  15. Comment on the paper ”The finite square well: whatever is worth teaching at all is worth teaching well ”, arXiv:1505.03376v2 [physics.ed-ph] by K. Razi Naqvi and S. Waldenstrøm
    16. Victor Barsan

    arXiv:1602.03754

  16. Goethe’s theory of colors between the ancient philosophy, middle ages occultism and modern science
    17. V. Barsan, A. Merticariu

    Cogent Arts & Humanities 3 (2016) 1145569

  17. New applications of the Lambert and generalized Lambert functions in ferromagnetism and quantum mechanics
    18. Victor Barsan

    arXiv:1611.01014v2 [cond-mat.stat-mech]

  18. Semiconductor quantum wells with BenDaniel - Duke boundary conditions: approximate analytical results
    19. Victor Barsan, Cristina-Mihaela Ciornei

    arXiv 1610.09479v2

  19. Algebraic approximations for transcendental equations with applications in nanophysics
    20. V. Barsan

    Philos.Mag. 95 (2015) 3023–3038

  20. Understanding quantum phenomena without solving the Schrödinger equation: the case of the finite square well
    21. V. Barsan

    Eur. J. Phys. 36 (2015) 065009 (12pp)

  21. Square wells, quantum wells and ultra-thin metallic films
    22. Victor Barsan

    arXiv:1307.2386v1; Philosophical Magazine 94 (2014) 190-207

  22. Shape- and topology-dependent heat capacity of few-particle systems
    23. V. Barsan

    arXiv: 1204.0384v1 [cond-mat.stat-mech]; Philos.Mag. 93 (2013) 1604-1617

  23. A new analytic approximation for the energy eigenvalues of a finite square well
    24. Victor Barsan

    Rom.Rep.Phys. 64 (2012) 685-694

  24. A new approximation for the square well problem
    25. V. Barsan, R. Dragomir

    Optoelectronic and Advanced Materials - Rapid Communications 6 (2012) 917 - 925

  25. Physical relevance of the Passare-Tsikh solution of the principal quintic equation
    26. V. Barsan, G.A. Nemnes

    J.Adv.Res.Phys. 2 (2011) 1-6

  26. The quartic oscillator in an external field and the statistical physics of highly anisotropic solids
    27. V. Barsan

    Philos.Mag. vol.91, p.477-488 (2011)

  27. Thermodynamics of a planar array of Ginzburg-Landau chains with nnn interaction
    28. V. Barsan

    Rom.Rep.Phys. vol.63, p.1038-1047

  28. Hamiltonian renormalization with applicatios to the quantum quartic oscillator
    29. G. Ciobanu, V. Barsan, A.T. Mincu

    Romanian Journal of Physics 55 (2010) 539

  29. The chain of classical anharmonic oscillators in an external field
    30. V. Barsan

    Romanian Reports in Physics 62 (2010) 219

  30. A two-parameter generalization of the complete elliptic integral of second kind
    31. Victor Barsan

    The Ramanujan Journal, vol.20, p.153 (October 2009)

  31. Physical applications of a new method of solving the quintic equation
    32. Victor Barsan

    arXiv:0910.2957v2 math-ph 27 Oct 2009

  32. The quartic oscillator in an external field and the statistical physics of highly anisotropic solids
    33. Victor Barsan

    Romanian Reports in Physics, 62 p.219 (2010) si arXiv:0912.1988 cond-mat.stat-mech

  33. The two-band theory of superconductivity turns 50
    34. V. Barsan, G. Ciobanu

    arXiv:0910.5941[physics.hist-ph] 30 Oct 2009

  34. Exact thermodynamics of a planar array of Ginzburg-Landau chains with nn and nnn interaction
    35. Victor Barsan

    Journal of Physics: Condensed Matter, vol. 20 (2008) 019701

  35. Hsue-Chern approach to the quantum anharmonic oscillator with applications to the statistical physics of low dimensional Ginzburg-Landau systems
    36. Victor Barsan

    Romanian Reports in Physics, vol. 60 (6), p.205 (2008)

  36. Phase transitions in low dimensional psi^4 systems
    37. Victor Barsan

    Philosophical Magazine, vol. 88 (2), p.121-134, January 2008

  37. A two-parameter generalization of the complete elliptic integral of second kind
    38. V. Barsan

    arXiv: 0708.2325

  38. Analytic results for a phase transition in a planar array of chains
    39. Victor Barsan

    Philosophical Magazine, Vol. 87, Issue7, page1043 (2007)

  39. Bessel functions of integer order in terms of hyperbolic functions
    40. V. Barsan, S. Cojocaru

    Arxivpreprint math-ph/0703010

  40. Physical applications of a simple approximation of Bessel functions of integer order
    41. Victor Barsan, Sergiu Cojocaru

    European Journal of Physics, vol. 28, p.983 (2007)

  41. Exact solutions for the Schrodinger equation for ferromagnetic chains
    42. S. Cojocaru, V. Barsan, A. Ceulemans

    Philosophical Magazine, Vol. 86, Issue32, pages 4983-4995 (11 November 2006)

  42. Ginzburg-Landau theory beyond the linear-chain approximation: the 2D case
    43. Victor Barsan

    Journal of Physics: Condensed Matter, vol. 18, p.9273-9286 (2006)

  43. Green ' s function and excitation spectrum of finite lattices
    44. S. Cojocaru, V. Bârsan, and A. Ceulemans

    phys. stat. sol. (b) 243, No. 8, 1963–1977 (2006)

  44. Green Functions for atomic wires
    45. Victor Barsan, Sergiu Cojocaru

    Romanian Reports in Physics, vol. 58, issue 2, p.123-127 (2006)

  45. Spin excitations on finite lattices and the discrete Fourier transform
    46. S. Cojocaru, V. Barsan, A. Ceulemans

    Journal of Magnetism and Magnetic Materials, vol. 307, issue 1, p.62-73 (December 2006)

  46. Superconductivity of strongly correlated electron systems
    47. V.A. Moskalenko, I. Porcescu, L. Dogotaru, D. Grecu and V. Bârsan

    Rom. Journ. Phys. 1999, V.44, P.569

  47. A diagram Technique for the Hubbard Model
    48. V.A. Moskalenko, S. Cojocaru and V. Bârsan

    Rom. Journ. Phys. 1995, V.40, P.877

  48. Luttinger model with finite-range potential
    49. V.Barsan, A.Corciovei

    Rev.Roum.Phys. vol.37 (1992) p.341

  49. A generalization of the Luttinger model
    50. V. Barsan

    J.Phys.Cond.Matter vol. 2 (1990) p.4815

  50. Methodological remarks on a 2D phase transition
    51. V.Barsan, A.Corciovei

    Rev.Roum.Phys. vol.34 (1989) p.503

  51. Scaling equations for the 1D two-fermion model
    52. C.Mantea, M.Apostol, V.Barsan, A.Corciovei, R.Fazio, G.Giaquinto

    Physica Scripta, vol. 39 (1989) p.294

  52. The conductivity of the Tomonaga-Luttinger model
    53. V. Barsan

    phys.stat.sol.(b), vol. 153 (1989) p.K151

  53. The Luttinger model with a finite-range potential
    54. V. Barsan

    J.Phys.Cond.Matter vol. 1 (1989) p.7961

  54. On the scaling equations for a two-fermion system
    55. C.Mantea, V.Barsan, A.Corciovei, M.Apostol

    Rev.Roum.Phys. vol. 33 (1988) p.219

  55. Remarks on the fermion-boson duality in 1D
    56. V.Barsan, M.Apostol, C.Mantea, A.Corciovei

    Rev.Roum.Phys. vol. 31 (1986) p.387

  56. O the cut-off parameters in the bosonisation technique
    57. M. Apostol, V. Barsan, C. Mantea

    Mol.Cryst.Liq.Crist. vol.119, p.453

  57. The diagonalisation of a simple bifermionic model
    58. V.Barsan

    Rev.Roum.Phys. vol. 30 (1985) p.755

  58. Bosonisation approach to the free fermions with linear energy spectrum in 1D
    59. M.Apostol, V.Barsan, C.Mantea

    Rev.Roum.Phys. vol.29 (1984) p.673

  59. Teoria Landau-Lifshitz a transformarilor structurale in solide
    60. V.Barsan

    St.Cerc.Fiz. vol.35 (1983) p.781

  60. Tranzitii de faza de speta a doua in sisteme fermionice
    61. V.Barsan

    St.Cerc.Fiz. vol. 35 (1983) p.781

  61. Many-body approach to the Tomonaga-Luttinger model
    62. M.Apostol, V.Barsan

    Rev.Roum.Phys. vol. 26 (1981) p.375

  62. Contributions to the theory of Weber-type gravitational antenna
    63. C.Mantea, A.Corciovei, V.Barsan

    Rev.Roum.Phys. vol.25 (1980) p.109

  63. On some "gravitational constants"
    64. V. Barsan, C. Mantea

    Rev.Roum.Phys. vol.23 (1978) p.979

  1. Quantum mecahanics for nanostructures: analytic approximations
    2. Victor Barsan

    New results in nanophysics, bionanoscience, nanophotonics, and solar energy conversion, Magurele, Sept15, 2023 (2023)

  2. Applications of generalized Lambert functions in nanomagnetism
    3. V. Barsan, V. Kuncser

    International Workshop on Advances in Nanomaterials, Bucharest - Magurele, 2018 (2018)

  3. New results concerning the generalized Lambert functions and their applications to solar energy conversion and nanophysics
    4. Victor Barsan

    Spectroscopy and Dynamics of Photoinduced Electronic Excitations, ICTP Trieste, Italy, May 8-12, 2017 (2017)

  4. Observarea unor anomalii atmosferice pe teritoriul Romaniei legate de "meteoritul tungus"
    5. V. Barsan

    Sesiunea Nationala de Comunicari Stiintifice, Muzeul Vasile Parvan, Barlad, sectiunea Astronomie (2015)

  5. Understanding quantum phenomena without solving Schroedinger equation
    6. V. Barsan

    Horizons in Physics Education (HOPE) annual forum, Coimbra, September 9-12, 2015 (2015)

  6. "Algebraization" of transcendental equations: a simple way to analytical approximate solutions
    7. V. Barsan

    14th International Balkan Workshop on Applied Physics, Constanta, July 2-5, 2014 (2014)

  7. Quantum mechanics for nanophysics, oral presentation
    8. V. Barsan

    Advanced workshop on New Trends in Nanophysics and Solar Energy Conversion, September 23-25, 2013, Magurele (2013)

  8. Lambert function and some transcendental equations of nanomagnetism
    9. V. Barsan

    A 4-a Conferinta Nationala de Fizica Aplicata, Iasi, 19-20 Noiembrie 2010 (2010)

  9. Physical applications of a new method of solving the quintic equation
    10. V. Barsan, M.A. Nemnes

    Conferinta Nationala de Fizica Teoretica, 23-25 iunie, Iasi, 2010 (2010)

  10. Quantum phase transitions in an 1D anharmonic chain with applications to nanophysics
    11. V. Barsan

    A 4-a Conferinta Nationala de Fizica Aplicata, Iasi, 19-20 Noiembrie 2010 (2010)

  11. Applications of the quintic equation to the thermodynamics of ferroelectrics with sixth order anharmonicities
    12. Victor Barsan

    Balkan Physics Union Conference 2009 (2009)

  12. Thermodynamics of a planar array of Ginzburg-Landau Chains with nnn interactions
    13. Victor Barsan

    Balkan Physics Union Conference 2009 (2009)

  13. A two-parameter generalization of the complete elliptic integral of second kind
    14. Victor Barsan

    The 5th Colloquium Mathematics in Engineering and Numerical Physics, October 9-11, Bucharest (2008)

  14. An analytical approximation for Bessel and Kelvin functions of integer order and its applications in physics
    15. Victor Barsan

    The 5th Colloquium Mathematics in Engineering and Numerical Physics (MENP5), October 9-11, Bucharest (2008)

  15. Phase transitions in low-dimensional systems of coupled anharmonic oscillators
    16. Victor Barsan

    A 15-a Conferinta Nationala de Fizica, Bucuresti,10-13 septembrie 2008 (2008)

  1. H.Hulubei, Curs de struct. materiei, v.1, Editura H. Hulubei, editor: V. Barsan
    2. Victor Barsan (editor)

    2022

  2. H.Hulubei, Curs de struct. materiei, v.2, Editura H. Hulubei, editor: V. Barsan
    3. Victor Barsan (editor)

    2022

  3. Horia Hulubei - omul si epoca sa, Editura Horia Hulubei, 2021, ed. Victor Barsan
    4. Victor Barsan (editor)

    2021

  4. Proceedings of the International Workshop on Advances in Nanomaterials Măgurele - Bucharest, September 17-19, 2018
    5. V. Barsan

    2019

  5. V. Barsan, Exact and approximate analytical solutions of Weiss equation of ferromagnetism. Theoretical aspects (I), in: Proceedings of the International Workshop on Advances in Nanomaterials Măgurele - Bucharest, September 17-19, 2018, p. 9 - 30
    6. V. Barsan

    2019

  6. V. Barsan: Conversations with L. Banyai, in: Ladislaus Banyai: Profile in motion (Editor: V. Barsan), p.11-31
    7. V. Barsan, L. Banyai

    2018

  7. V. Barsan: Cuvant preliminar, la: Serban Titeica: Modificarea rezistentei electrice a metalelor in camp magnetic (Editor: V. Barsan)
    8. V. Barsan

    2018

  8. Victor Barsan, Quantum Wells and Ultrathin Metallic Films, in Heterojunctions and Nanostructures, Ed.: Vasilios N. Stavrou, (InTech), 2018
    9. V. Barsan

    2018

  9. Victor Barsan, Semiconductor quantum wells with BenDaniel-Duke boundary conditions, in:Rosalinda Inguanta (Ed.): Semiconductors - Electrochemical Growth and Characterization, (InTech, Rijeka), Monography, 2018
    10. Victor Barsan

    2018

  10. Complemente de mecanica statistica cuantica, Editura Tehnica, Bucuresti, ISBN 978-973-31-2384-2
    11. Radu P. Lungu, Victor Barsan (Editori); autor capitole: V. Barsan: Cap.6. Gropi cuantice si filme metalice ultra-subtiri, p.169-204; Gh. Ciobanu, V. Barsan: Comportarea critica a unui solid anarmonic, p.205-222.

    2013

  11. Hands-on science, innovative teaching, gates to research, Editura Stiinta, Chisinau, ISBN 978-9975-67-873-5
    12. Editor: V. Barsan; autor capitol: V. Barsan: Advanced problems with elementary solutions

    2013

  12. Radu Grigorovici si fizica romaneasca in "deceniul intunecat": 1950-1960
    13. V. Barsan (Editor); autor al: Cap.5: Colorimetrie, p.47-56; Cap. 7: Teoria culorilor din perspective fizicii moderne, p.77-87; Cap. 8: Microscopia cu contrast de faza, p.87-91

    2013

  13. Trends in electromagnetism, InTech, 2012
    14. Editori carte: V. Barsan, R.P. Lungu; autor capitol: Victor Barsan: Waveguides, resonant cavities, optical fibers and their quantum counterparts, p.89 – 112

    2012

  14. Preface to: Radu Grigorovici: Scientific Papers (Editura Academiei Romane, Bucuresti), 2011, p.XV-XXXVIII
    15. Victor Barsan, Rodica Marchidan-Grigorovici, Mihai Popescu, Andrei Devenyi

    2011

  15. Trends in Nanophysics: Theory, Experiment and Technology, Springer Heidelberg Dordrecht London New York
    16. A. Aldea, V. Barsan (Eds.)

    2010

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