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  4. Vasile Victor Birsan

Vasile Victor Birsan

DFT

3412 / 0214042334

vbarsan@theory.nipne.ro

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67

Scientific Articles

15

Conferences

19

Books

.

Patents

  1. Observation of some atmospheric anomalies of the territory of Romania related to the "Tungus meteorite"
    2. V. Barsan

    Research Gate preprint DOI 10.13140/RG.2.2.33253.26084

  2. Garrett approximation for quantum dots
    3. V. Barsan

    Romanian Reports in Physics 76 (2024) 501

  3. 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
    4. Victor Barsan

    Rom. J. Physics 67 (2022) 109

  4. An improved algorithm for solving the quintic equation
    5. Victor Barsan

    Romanian Reports in Physics 74 (2022) 117

  5. Critical behavior of an anharmonic nanoscopic solid
    6. V. Barsan

    Romanian Reports in Physics 73 (2021) 501 14pp

  6. Garrett approximation revisited
    7. V. Barsan

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

  7. Inverses of Langevin, Brillouin and related functions: a status report
    8. V. Barsan

    Romanian Reports in Physics

  8. Garrett approximation revisited
    9. V. Barsan

    arXiv 1906.05697v1[quant-ph]

  9. Inverse Langevin and Brillouin functions: mathematical properties and physical applications
    10. V. Barsan

    arXiv 1902.07641 physics.gen-ph

  10. Simple and accurate approximants of inverse Brillouin functions
    11. V. Barsan

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

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

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

  12. Semiconductor quantum wells with BenDaniel–Duke boundary conditions and Janus nanorods
    13. V. Barsan

    Semiconductors—Growth and Characterization ed R Inguanta and C Sunseri (London: IntechOpen) ch 3 pp 47–66

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

    Open Physics

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

    arXiv:1702.07225

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

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

  16. New results concerning the generalized Lambert functions and their applications to solar energy conversion and nanophysics
    17. V. Barsan

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

  17. Siewert solutions of transcendental equations, generalized Lambert functions and physical applications
    18. Victor Barsan

    arXiv:1703.10052v1

  18. 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
    19. Victor Barsan

    arXiv:1602.03754

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

    Cogent Arts & Humanities 3 (2016) 1145569

  20. New applications of the Lambert and generalized Lambert functions in ferromagnetism and quantum mechanics
    21. Victor Barsan

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

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

    arXiv 1610.09479v2

  22. Semiconductor quantum wells with BenDaniel–Duke boundary conditions: approximate analytical results. European Journal of Physics. 2016 Dec 6;38(1):015407.
    23. Barsan V, Ciornei MC.

    Eur. J. Phys. 2016 Dec 6;38(1):015407.

  23. Algebraic approximations for transcendental equations with applications in nanophysics
    24. V. Barsan

    Philos.Mag. 95 (2015) 3023–3038

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

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

  25. Square wells, quantum wells and ultra-thin metallic films
    26. V. Barsan

    Philosophical Magazine 94 (2014) 190-207

  26. Shape- and topology-dependent heat capacity of few-particle systems
    27. V. Barsan

    Philos.Mag. 93 (2013) 1604-1617

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

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

  28. A new approximation for the square well problem
    29. V. Barsan, R. Dragomir

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

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

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

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

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

  31. Thermodynamics of a planar array of Ginzburg-Landau chains with nnn interaction
    32. V. Barsan

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

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

    Romanian Journal of Physics 55 (2010) 539

  33. The chain of classical anharmonic oscillators in an external field
    34. V. Barsan

    Romanian Reports in Physics 62 (2010) 219

  34. A two-parameter generalization of the complete elliptic integral of second kind
    35. Victor Barsan

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

  35. Physical applications of a new method of solving the quintic equation
    36. Victor Barsan

    arXiv:0910.2957v2 math-ph 27 Oct 2009

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

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

  37. The two-band theory of superconductivity turns 50
    38. V. Barsan, G. Ciobanu

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

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

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

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

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

  40. Phase transitions in low dimensional psi^4 systems
    41. Victor Barsan

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

  41. A two-parameter generalization of the complete elliptic integral of second kind
    42. V. Barsan

    arXiv: 0708.2325

  42. Analytic results for a phase transition in a planar array of chains
    43. Victor Barsan

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

  43. Bessel functions of integer order in terms of hyperbolic functions
    44. V. Barsan, S. Cojocaru

    Arxivpreprint math-ph/0703010

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

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

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

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

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

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

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

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

  48. Green Functions for atomic wires
    49. Victor Barsan, Sergiu Cojocaru

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

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

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

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

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

  51. A diagram Technique for the Hubbard Model
    52. V.A. Moskalenko, S. Cojocaru and V. Bârsan

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

  52. Luttinger model with finite-range potential
    53. V.Barsan, A.Corciovei

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

  53. A generalization of the Luttinger model
    54. V. Barsan

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

  54. Methodological remarks on a 2D phase transition
    55. V.Barsan, A.Corciovei

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

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

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

  56. The conductivity of the Tomonaga-Luttinger model
    57. V. Barsan

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

  57. The Luttinger model with a finite-range potential
    58. V. Barsan

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

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

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

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

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

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

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

  61. The diagonalisation of a simple bifermionic model
    62. V.Barsan

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

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

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

  63. Teoria Landau-Lifshitz a transformarilor structurale in solide
    64. V.Barsan

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

  64. Tranzitii de faza de speta a doua in sisteme fermionice
    65. V.Barsan

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

  65. Many-body approach to the Tomonaga-Luttinger model
    66. M.Apostol, V.Barsan

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

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

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

  67. On some "gravitational constants"
    68. 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. Horia Hulubei - omul si epoca sa, editia a III-a
    2. V. Barsan

    2025

  2. Horia Hulubei - omul si epoca sa, ed. II
    3. V. Barsan

    2024

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

    2022

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

    2022

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

    2021

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

    2019

  7. 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
    8. V. Barsan

    2019

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

    2018

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

    2018

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

    2018

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

    2018

  12. Complemente de mecanica statistica cuantica, Editura Tehnica, Bucuresti, ISBN 978-973-31-2384-2
    13. 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

  13. Hands-on science, innovative teaching, gates to research
    14. V. Barsan (editor)

    2013

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

    2013

  15. Radu Grigorovici si fizica romaneasca in "deceniul intunecat": 1950-1960
    16. 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

  16. Ch. 5: Waveguides, Resonant Cavities, Optical Fibers and Their Quantum Counterparts, in Trends in Electromagnetism, 2012
    17. V. Barsan

    2012

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

    2012

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

    2011

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

    2010

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