Teorinės fizikos ir astronomijos institutas Teorinės fizikos ir astronomijos institutas

Kompleksinių fizinių ir socialinių sistemų grupė » Darbuotojai

dr. habil. Vygintas Gontis

grupės vadovas, vyriausiasis mokslo darbuotojas

Kab. Saulėtekio al.3, A433 kab.
Tel. 
El. p. 
http://www.itpa.lt/~gontis/
 
  1. V. Gontis, Calculation of the spectral lines intensities and shapes, radiated by the quasi-equilibrium cylindrical plasma, Algorithms and programs 3, Vilnius (1978).
  2. V. Gontis, P. Mikulskis, J. Oberauskas, P. Serapinas, J. Salkauskas, and A. Urbas, Correlative study of spark discharge radiation, Proc. XXI Colloquim Spectroscopicum and 8 Int. Conf. Atomic Spectroscopy, Cambridge (1979).
  3. V. Gontis, V. S. Lisitsa, and E. Naslenas, Influence of approximation to the calculation of radiation loses in high temperature plasma, Preprint IAE-3353/6, I.V. Kurchatov Institute of Atomic Energy (1980).
  4. V. Gontis and E. Naslenas, On the non-iterative method of calculation of electron and atom collision cross-sections, Preprint VINITI 82 (2240) (1982).
  5. B. Aleksa, V. Gontis, P. Serapinas, and A. Urbas, Measurement of the time dependence of the electron density in the nanosecond electric discharges, Liet. Fiz. Rink. 22 (4), p. 66-71 (1982) [Engl. tr.: Sov. Phys. - Coll. 22 (4) (1979)].
  6. V. Gontis and J. Salkauskas, The influence of reabsorption in spectral analysis, Institute of Physics of Belarusia, Minsk (1982).
  7. V. A. Abramov, V. G. Gontis, and V. S. Lisitsa, Role of fast ions in the emission from hot plasma, JETP Lett. 37 (8), p. 444-446 (1983).
  8. V. A. Abramov, V. G. Gontis, and V. S.Lisitsa, Excitation of impurities by heavy particles and radiative loses in the thermonuclear plasma, Plasma Physics Reports, 10 (2), p. 400-406 (1984).
  9. V. G. Gontis and V. S. Lisitsa, The structure of X-ray spectral lines of heavy impurities in the high temperature low density plasma, Preprint IAE-3952/6 (1984).
  10. V. G. Gontis, J. J. Grudzinskas, R. S. Kisielius, Z. B. Kupliauskene, Z. B. Rudzikas, and V. I. Tutlis, Modelling processes of atoms in the plasma of TOKAMAK's, Liet. Fiz. Rink. 24 (2), p. 120-121 (1984) [Engl. tr.: Sov. Phys.- Coll., 24 (2) (1984)].
  11. V. A. Abramov, V. Gontis, J. Grudzinskas, R. Kisielius, A. Kupliauskiene, V. S. Lisica, Z. Rudzikas, and V. Tutlys, Theoretical investigation of X-ray spectra and diagnostics of heavy impurities in high temperature plasma, Abstract of the presentation in the XIX Soviet Congress on Spectroscopy, Tomsk (1983).
  12. V. A. Abramov, V. Gontis, and V. S. Lisica, The excitation of high charged ions by heavy particles and radiation loses in thermonuclear plasma, Institute of Physics of Latvia, Ryga (1984).
  13. V. G. Gontis, On the influence of non-Maxwell distribution of electrons to the X-radiation of impurities in the TOKAMAK, Liet. Fiz. Rink., 25 (2), p. 106-107 (1985) [Engl. tr.: Sov. Phys.- Coll., 25 (2) (1985)].
  14. V. G. Gontis and V. S. Lisitsa, Non-equilibrium effects and structure of X-ray spectral lines in the TOKAMAK plasma, Plasma Physics Reports 11 (4) (1984).
  15. V. G. Gontis and B. P. Kaulakys, The stochastic dynamics of a highly excited hydrogen-like atom in a low frequency field, Deposited in VINITI as 86 (5087), 25pp. (1986).
  16. V. G. Gontis and B. P. Kaulakys, The stochastic dynamics of a highly excited hydrogen-like atom in a low frequency field, Liet. Fiz. Rink. 27 (3), p. 368-370 (1987) [Engl. tr.: Sov. Phys.- Coll. 27 (3), p. 111-113 (1987)].
  17. V. Gontis and B. Kaulakys, The quasiclassical maps for the one-dimensional systems with periodic perturbation. An atom in microwave radiation, Lith. J. Phys. 28 (6), p. 672-678 (1988).
  18. V. Gontis and B. Kaulakys, Stochastic dynamics of hydrogenic atoms in the microwave field: modelling by maps and quantum description, J. Phys. B: At. Mol. Phys. 20 (19), p. 5051-5064 (1987); PDF.
  19. V. G. Gontis and B. P. Kaulakys, Classical and quasiclassical maps for Rydberg atoms in microwave field, 20th All-Union Spectroscopic Congress, Kijev, p. 17 (1988).
  20. V. Gontis and B. Kaulakys, Quasi-classical transition amplitudes for one-dimensional atom in harmonic field, Lith. J. Phys. 31 (2), p. 75-78 (1991).
  21. B. Kaulakys, V. Gontis, G. Hermann, and A. Scharmann, Scaling relations for the hydrogen atom in a harmonic field: classical chaos and quantum suppression of diffusion, Phys. Letters A 159 (4,5), p. 261-265 (1991).
  22. V. Svedas, Z. Kuprionis, V. Gontis, and B. Kaulakys, Kinetics of diffusive ionization of the potassium Rydberg atoms, Institute of Physics Conference Series (114), p. 141-144 (1991).
  23. B. Kaulakys, V. Gontis, and G. Vilutis, Ionisation of Rydberg atoms by subpicosecond electromagnetic pulses, Lith. J. Phys. 33 (5-6), p. 354-357 (1993); Lith. J. Phys. (Allerton Press) 33 (5-6), p. 290-293 (1993).
  24. B. Kaulakys, V. Gontis, and V. Vilutis, On the ionisation of Rydberg atoms by subpicosecond electromagnetic pulses, Abstracts VIIIth Intern. Symp. on UPS, Vilnius, Sept. 26-30, p. III.12. (1993).
  25. V. Gontis and K. Pyragas, Legal reform of research and higher education in Lithuania, Science in an Open Society: Strategies and Structures, Materials of the Intern. Conference held in Vilnius, April 28-29, 1994, Vilnius, OSF-Lithuania, p. 152-156. (1995).
  26. V. Gontis ir K. Pyragas, Teisinė mokslo ir studijų reforma Lietuvoje, Mokslas atvirai visuomenei: Strategija ir struktūra (Tarptaut. konfer. vykusios Vilniuje 1994 m. balandžio 28-29 d.d. medžiaga), Vilnius, ALF, p. 160-164. (1995).
  27. V. Gontis and B. Kaulakys, Quantum dynamics of simple and complex systems affected by repeated measurement, Intern. Conf. on Nonlinear Dynamics, Chaos and Complex Systems, Zakopane, 7-12 November, Abstract p. 173 (and Poster), (1995).
  28. V. Gontis and B. Kaulakys, Quantum dynamics of simple and complex systems affected by repeated measurement, J. Tech. Phys. 38 (2), p. 223-226 (1997).
  29. B. Kaulakys and V. Gontis, Quantum anti-Zeno effect, Phys. Rev. A, 56 (2), p. 1131–1137 (1997); e-Print quant-ph/9708024; PDF.
  30. V. Gontis ir B. Kaulakys, Kvantinis Zenono ir kvantinis anti-Zenono efektai, 32-oji Lietuvos nacionalinė fizikos konferencija, Vilnius, 1997 m. spalio 8-10 d., Tezės, p. 97-98, (1997).
  31. V. Gontis, Chaosas klasikinės ir kvantinės teorijų sandūroje, IX Pasaulio lietuvių mokslo ir kūrybos simpoziumas, Vilnius, 1995 m. lapkričio 22-25 d.d. Tezės, p. 76. (1995).
  32. V. Gontis and B. Kaulakys, Quantum Zeno and quantum anti-Zeno effects, Lith. J. Phys. 38 (1), p. 118-121 (1998); e-Print quant-ph/9806015.
  33. M. Alaburda, V. Gontis, and B. Kaulakys, Interaction and chaotic dynamics of the classical hydrogen atom in an electromagnetic field, Lith. J. Phys. 40 (4), p. 242-247 (2000).
  34. V. Gontis, Fizikų patirtis taip pat gali būti pritaikyta modeliuojant ekonomikos procesus, XI Pasaulio lietuvių mokslo ir kūrybos simpoziumas, Vilnius, 2000 m. birželio 21-26 d.d. Tezių rinkinys, p. 218 (2000); MS Word.
  35. V. Gontis, Prekybos apyvartos finansų rinkose modeliavimas, Vilnius 2001 m. birželio 14-16 d. Pranešimų tezės, 34-oji Lietuvos nacionalinė fizikų konferencija, p. 160 (2001); MS Word.
  36. V. Gontis, Modelling share volume traded in financial markets, Lith. J. Phys. 41 (4-6), p. 551-555 (2001); e-Print cond-mat/0201514; PDF.
  37. V. Gontis, Lithuanian Science in transition: Statistical analysis, Revue Baltique 16, p. 24-32 (2000); MS Word.
  38. V. Gontis, Multiplicative stochastic model of the time interval between trades in financial markets, Nonlinear Analysis: Modelling and Control, Vilnius, IMI 7 (1), p. 43-54 (2002); e-Print cond-mat/0211317.
  39. V. Gontis and B. Kaulakys, Multiplicative point process as a model of financial markets (2003); e-Print cond-mat/0303089.
  40. V. Gontis and B. Kaulakys, Multiplicative stochastic sequence of events as a model of power-law noise, In: Noise and Fluctuations, Proc. 17th Intern. Conf., Aug. 18-22, 2003, Prague, p. 622-625 (2003); PDF.
  41. B. Kaulakys, M. Alaburda, V. Gontis, and T. Meškauskas, Modeling and Estimation of 1/f noise of the signals represented by pulses and by fluctuating amplitude, In: Noise and Fluctuations, Proc. 17th Intern. Conf., Aug. 18-22, 2003, Prague, p. 679-682 (2003); PDF.
  42. V. Gontis, B. Kaulakys, and M. Alaburda, Point process model of 1/f noise, to be published.
  43. V. Gontis, Sandorių finansų rinkose modeliavimas multiplikatyvia stochastine taškinių įvykių seka (Modeling share volume traded in financial markets using multiplicative stochastic sequence of events), XII Pasaulio lietuvių mokslo ir kūrybos simpoziumas, Čikaga, 2003 m. gegužės 21-25 d.d. Tezių rinkinys, p. 79 (2003); MS Word.
  44. V. Gontis, Ekonofizika - fizikų indėlis plėtojant finansų teoriją (Econophysics - the contribution of physicists to the theory of finance), XII Pasaulio lietuvių mokslo ir kūrybos simpoziumas, Čikaga, 2003 m. gegužės 21-25 d.d. Tezių rinkinys, p. 205 (2003); MS Word.
  45. V. Gontis ir B. Kaulakys, Sandorių skaičiaus finansų rinkose modeliavimas (Modeling trading activity in financial markets), Vilnius 2003 m. birželio 12-14 d. Pranešimų tezės, 35-oji Lietuvos nacionalinė fizikų konferencija, p. 242 (2003); MS Word.
  46. V. Gontis, B. Kaulakys ir M. Alaburda, Taškinių vyksmų modelis, generuojantis įvairaus polinkio 1/f triukšmą (Point process model of 1/f noise with different exponents), Vilnius 2003 m. birželio 12-14 d. Pranešimų tezės, 35-oji Lietuvos nacionalinė fizikų konferencija, p. 237 (2003); MS Word.
  47. V. Gontis, B. Kaulakys, M. Alaburda, and J. Ruseckas, Evolution of complex systems and 1/f noise: from physics to financial markets, Solid State Phenomena 97-98, p. 65-70 (2004); PDF.
  48. V. Gontis and B. Kaulakys ,Modelling financial market by the multiplicative sequence of trades, In: Application of Physics in Financial Analysis 4, Abstr. 4 Int. Conf., November 13-15, Warsaw, p. A72 (2003).
  49. V. Gontis and B. Kaulakys, Multiplicative point process as a model of trading activity, Physica A 343, p. 505-514 (2004); PDF.
  50. V. Gontis and B. Kaulakys, Modeling financial markets by the multiplicative sequence of trades Physica A 344, p. 128-133 (2004); PDF.
  51. B. Kaulakys, V. Gontis, and M. Alaburda, Point process model of 1/f noise vs a sum of Lorentzians, Phys. Rev. E 71 (5) 051105 (2005); doi:10.1103/PhysRevE.71.051105; e-Print cond-mat/0504025); PDF.
  52. V. Gontis, B. Kaulakys, and J. Ruseckas, Point process models of 1/f noise and Internet traffic, AIP Conf. Proc. 776 p. 144-149 (2005); doi:10.1063/1.1985385; e-Print cs.NI/0508131; PDF.
  53. B. Kaulakys, J. Ruseckas, V. Gontis and M. Alaburda, Nonlinear stochastic models of 1/f noise and power-law distributions, Physica A 365 (1), pp. 217-221 (2006); doi:10.1016/j.physa.2006.01.017; PDF.
  54. B. Kaulakys, M. Alaburda and V. Gontis, Long-range stochastic point processes with the power-law statistics, Prague Stochastics 2006, Proc. Prague Conf., 21-25 August 2006, Ed. M. Huskova and M. Janzura, Matfyzpress, Charles University in Prague, pp. 364-373 (2006); PDF.
  55. V. Gontis and B. Kaulakys, Long-range memory model of trading activity and volatility, J. Stat. Mech. (10) P10016 (2006); doi:10.1088/1742-5468/2006/10/P10016; PDF.
  56. B. Kaulakys, M. Alaburda, V. Gontis and T. Meškauskas, Multifractality of the multiplicative autoregressive point processes, In Complexus Mundi: Emergent Patterns in Nature, Ed. M. M. Novak, World Scientific, Singapore, pp.277-286 (2006); PDF.
  57. V. Gontis and B. Kaulakys, Modeling long-range memory trading activity by stochastic differential equations, Physica A 382 (1), p. 114 (2007); doi:10.1016/j.physa.2007.02.012; PDF.
  58. B. Kaulakys, M. Alaburda, V. Gontis, T. Meskauskas and J. Ruseckas, Modeling of flows with the power-law spectral densities and power-law distributions of flow's intensities, Traffic and Granular Flow'05 Proc. Intern. Conf., Berlin, 10-12 October 2005, Editors: A. Schadschneider, T. Poschel, R. Kuhne, M. Schreckenberg and D. E. Wolf, Springer-Verlag, Berlin, p. 603-611 (2007); physics/0512068.
  59. B. Kaulakys, M. Alaburda and V. Gontis, Point Processes Modeling of time series exhibiting power-law statistics, AIP Conf. Proc. 922 (1), p. 535-538 (2007); doi:10.1063/1.2759736; PDF.
  60. V. Gontis, B. Kaulakys, and J. Ruseckas, Trading activity as driven Poisson process: Comparison with empirical data, Physica A 387 (15), p. 3891 (2008); doi:10.1016/j.physa.2008.02.078; PDF.
  61. B. Kaulakys, M. Alaburda, V. Gontis, and J. Ruseckas, Modeling long-memory processes by stochastic difference equations and superstatistical approach, Brazilian Journal of Physics 39 (2A), p. 453-456 (2009); PDF.
  62. B. Kaulakys, M. Alaburda and V. Gontis, Modeling scaled processes and clustering of events by the nonlinear stochastic differential equations, ICNF 2009, AIP Conf. Proc. 1129, p. 13-16 (2009); PDF; doi:10.1063/1.3140414.
  63. V. Gontis, B. Kaulakys and J. Ruseckas, Nonlinear stochastic differential equation as the background of financial fluctuations, ICNF 2009, AIP Conf. Proc. 1129, p. 563-566 (2009); PDF; doi:10.1063/1.3140536.
  64. V. Gontis, J. Ruseckas and A. Kononovičius, A long-range memory stochastic model of the return in financial markets, Physica A 389, p. 100–106 (2010); PDF; doi:10.1016/j.physa.2009.09.011.
  65. V. Gontis and A. Kononovičius, Nonlinear Stochastic Model of Return matching to the data of New York and Vilnius Stock Exchange, Dynamics of Socio-Economic Systems 2 (1), p. 101–109 (2010); PDF.
  66. V. Gontis, J. Ruseckas and A. Kononovicius, A Non-Linear Double Stochastic Model of Return in Financial Markets, In: Stochastic Control, ed. C. Myers (InTech, 2010), pp.559-580; PDF.
  67. J. Ruseckas, B. Kaulakys and V. Gontis, Herding model and 1/f noise, EPL 96 60007 (2011); doi:10.1209/0295-5075/96/60007; PDF.
  68. V. Daniunas, V. Gontis and A. Kononovicius, Agent-based Versus Macroscopic Modeling of Competition and Business Processes in Economics, ICCGI 2011, The Sixth International Multi-Conference on Computing in the Global Information Technology (2011); PDF.
  69. St. Reimanna, V. Gontis and M. Alaburda, Interplay between positive feedbacks in the generalized CEV process, Physica A 390, p. 1393-1401 (2011); PDF; doi:10.1016/j.physa.2010.11.043.
  70. A. Kononovicius, V. Gontis, Agent based reasoning for the non-linear stochastic models of long-range memory, Physica A 391 1309 (2012); doi:10.1016/j.physa.2011.08.061; PDF.
  71. J. Ruseckas, V. Gontis and B. Kaulakys, Nonextensive statistical mechanics distributions and dynamics of financial observables from the nonlinear stochastic differential equations, Advances in Complex Systems 15 (1) 1250073 (2012); doi:10.1142/S0219525912500737; PDF.
Apie TFAI svetainę
Teorinės fizikos ir astronomijos institutas, Saulėtekio al. 3, 10257 Vilnius, LIETUVA, tel. +370 5 2234636, faks. +370 5 2234637, tfai@tfai.vu.lt