Publications by I. O. Vakarchuk
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G. Panochko, V. S. Pastukhov, I. O. Vakarchuk
Impurity self-energy in the strongly-correlated Bose systems
Int. J. Mod. Phys. B
32, No. 5, 1850053 [9 p.] (2018)
[abs]
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G. Panochko, V. S. Pastukhov, I. O. Vakarchuk
Behavior of the impurity atom in a weakly-interacting Bose gas
Condens. Matter Phys.
20, No. 1, 13604 [11 p.] (2017)
[abs]
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I. O. Vakarchuk, G. Panochko
The effective mass of an impurity atom in the Bose liquid with a deformed Heisenberg algebra
Ukr. J. Phys.
62, No. 2, 123-131 (2017)
[abs]
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I. O. Vakarchuk, G. I. Panochko, V. S. Pastukhov
Path-integrals method in the Bose-polaron problem
Visnyk Lviv Univ. Ser. Phys.
52, 17-27 (2016)
[full text]
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I. O. Vakarchuk, O. I. Hryhorchak, V. S. Pastukhov, R. O. Prytula
Effective mass of 4He atom in superfluid and normal phases
Ukr. J. Phys.
61, No. 1, 29-37 (2016)
[abs]
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I. O. Vakarchuk, O. I. Hryhorchak
Structure functions of many-boson system with regard for direct three- and four-particle correlations
Ukr. J. Phys.
60, No. 11, 1115-1125 (2015)
[abs]
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I. O. Vakarchuk, G. I. Panochko
Theory of a many-boson system with deformed Heisenberg algebra
Condens. Matter Phys.
18, No. 3, 33002 [14 p.] (2015)
[abs]
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I. O. Vakarchuk, O. I. Hryhorchak
Internal energy of the many-boson system with three- and four-particle direct correlations taken into account
J. Phys. Stud.
19, No. 1/2, 1005 [14 p.] (2015)
[abs]
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I. O. Vakarchuk, Iu. M. Diakiv
Differential cross-section of the photoelectric effect in the deformed electromagnetic field
J. Phys. Stud.
18, No. 2/3, 2004 [5 p.] (2014)
[full text]
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I. O. Vakarchuk
Five stories on astronomy and physics
Svit Fizyky (World of Physics)
No. 1, 3-8 (2014)
[full text]
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I. O. Vakarchuk, V. S. Pastukhov, R. O. Prytula
Theory of structure and thermodynamic function of liquid 4He (Review Article)
Fiz. Nizk. Temp.
39, No. 9, 958-969 (2013)
[Low Temp. Phys. 39, 741-751 (2013)]
[abs]
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I. O. Vakarchuk, V. S. Pastukhov, R. O. Prytula
Theory of heat capacity of liquid helium-4 for temperatures above the critical point
Ukr. Phys. J.
57, No. 12, 1214-1222 (2012)
[abs]
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I. O. Vakarchuk, G. I. Panochko
Impurity states in a many-boson system
J. Phys. Stud.
16, No. 4, 4601 [8 p.] (2012)
[full text]
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I. O. Vakarchuk
Historical sketch of the creation of quantum theory
Svit Fizyky (World of Physics)
No. 1, 3-13 (2012)
[full text]
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I. O. Vakarchuk, V. S. Pastukhov
Random phase approximation for Bose systems above the temperature of phase transition
J. Phys. Stud.
15, No. 3, 3003 [7 p.] (2011)
[full text]
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I. O. Vakarchuk, O. I. Hryhorchak
Partition function of many-boson system with direct three- and four-particle correlations taken into account
Visnyk Lviv Univ. Ser. Fiz.
46, 3-48 (2011)
[full text]
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I. O. Vakarchuk
On the correspondence between classical physical quantities and quantum mechanical operators
J. Phys. Stud.
15, ¹3, 3998(1-8) (2011)
[full text]
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I. O. Vakarchuk
Deformed Heisenberg algebra in the theory of liquid 4He
Ukr. J. Phys.
55, No. 1, 36-43 (2010)
[full text]
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I. O. Vakarchuk
Mirror
in: Philosophical Problems of Science: Lviv-Warsaw Seminar
14-22 (2010)
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I. O. Vakarchuk
"Divine proportion"
in: Philosophical Problems of Science: Lviv-Warsaw Seminar
84-87 (2010)
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I. O. Vakarchuk, O. I. Hryhorchak
Density matrix of the many-boson system with the consideration of three- and four-particle direct correlations
J. Phys. Stud.
13, No. 3, 3004 [28 p.] (2009)
[full text]
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I. O. Vakarchuk, R. O. Prytula
Temperature dependence of the pair distribution function of the liquid 4He
J. Phys. Stud.
13, No. 2, 2003 [5 p.] (2009)
[full text]
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I. O. Vakarchuk, R. O. Prytula
One-particle density matrix of liquid 4He in the pair correlation approximation
Ukr. Fiz. Zh.
54, No. 7, 687-696 (2009)
[Ukr J. Phys. 54, 686-695 (2009)]
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I. O. Wakarczuk
Boska proporcja
Przegląd Uniwersytecki: Pismo informacyjne Uniwersytetu Wrocławskiego
Nr 11 (162), 8-9 (2009)
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I. O. Vakarchuk, R. O. Prytula
Structure functions of liquid helium-4 with three- and four-particle indirect correlation taken into consideration
J. Phys. Stud.
12, No. 4, 4001 [12 p.] (2008)
[full text]
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I. O. Vakarchuk
Casimir energy for the field with deformed Poisson brackets
Physical collection of Shevchenko Sci. Soc.
7, 369-376 (2008)
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I. O. Vakarchuk, V. S. Pastukhov
Bose-condensate in two-component Bose-liquid
J. Phys. Stud.
12, No 3, 3002 [8 p.] (2008)
[full text]
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I. O. Vakarchuk
Theory of radiation and absorption of deformed field quanta
Condens. Matter Phys.
11, No. 3(55), 409-416 (2008)
[abs]
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I. O. Vakarchuk
The Casimir effect in a deformed field
J. Phys. A: Math. Theor.
41, No. 18, 185402 [10 p.] (2008)
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I. O. Vakarchuk, V. S. Pastukhov
Density matrix of binary Bose-liquid in the approximation of pair correlations
J. Phys. Stud.
12, No 1, 1001 [5 p.] (2008)
[full text]
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T. V. Fityo, I. O. Vakarchuk, V. M. Tkachuk
The WKB approximation in the deformed space with the minimal length and minimal momentum
J. Phys. A: Math. Theor.
41, No. 4, 045305 [6 p.] (2008)
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I. A. Vakarchuk
One-particle density matrix of liquid 4He
Teor. Mat. Fiz.
154, No. 1, 9-30 (2008)
(in Russian)
[Theor. Math. Phys. 154, 6-25 (2008)]
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I. O. Vakarchuk
Philosophical aspects of the general relativity theory
Filozoficzne problemy nauki,
73-90 (LvivWarszawa: Wydawnictwo Naukowe Semper, 2008)
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I. O. Vakarchuk
Schrödinger's cat and the problem of two cultures
Filozoficzne problemy nauki,
182-185 (LvivWarszawa: Wydawnictwo Naukowe Semper, 2008)
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I. O. Vakarchuk
Memory and recurrence of events
Filozoficzne problemy nauki,
343-344 (LvivWarszawa: Wydawnictwo Naukowe Semper, 2008)
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I. O. Vakarchuk
Higher education in Ukraine European dimension: status, problems, prospects
Vyshcha shkola
¹3, 3-18 (2008)
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I. O. Vakarchuk
Modern physical and mathematical education and science: trends and perspectives
Svit Fizyky (World of Physics)
No. 3, 16-28 (2008)
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A. A. Rovenchak, I. O. Vakarchuk
Calculation of the condensate fraction in liquid helium-4
J. Phys. Stud.
11, No. 4, 404-407 (2007)
[abs]
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I. O. Vakarchuk, R. O. Prytula, A. A. Rovenchak
Kinetic energy and heat capacity of liquid 4He
J. Phys. Stud.
11, No. 3, 259-267 (2007)
[abs]
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I. O. Vakarchuk
Schrödinger's cat and the problem of two cultures
in: Myśli o języku, nauce i wartościach: księga ofiarowana Profesorowi Jackowi Juliuszowi Jadackiemu w sześćdziesiątą rocznicę urodzin. Pod red. W. Strawińskiego, M. Grygiańca i A. Brożek,
203-212 (Warszawa, Wydawnictwo Naukowe Semper, 2006)
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T. V. Fityo, I. O. Vakarchuk, V. M. Tkachuk
One-dimensional Coulomb-like problem in deformed space with minimal length
J. Phys. A: Math. Gen.
39, 2143-2149 (2006)
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T. V. Fityo, I. O. Vakarchuk, V. M. Tkachuk
WKB approximation in deformed space with minimal length
J. Phys. A: Math. Gen.
39, 379-387 (2006)
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I. O. Vakarchuk
On Dirac theory in the space with deformed Heisenberg algebra: exact solutions
J. Phys. A: Math. Gen.
38, 7567-7576 (2005)
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I. O. Vakarchuk
Reply to 'Comment on 'Kepler problem in Dirac theory for a particle with position-dependent mass''
J. Phys. A: Math. Gen.
38, 6859 (2005)
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I. O. Vakarchuk
The Kepler problem in Dirac theory for a particle with position-dependent mass
J. Phys. A: Math. Gen.
38, 4727-4734 (2005)
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I. O. Vakarchuk
A self-consistent theory of liquid 4He
J. Phys. Stud.
8, No. 3, 223-240 (2004)
[full text]
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I. O. Vakarchuk
Structural variants of higher education in the context of the Bologna Process
Models of harmonization of national and international standards of education in the context of the Bologna Process: Proceedings of the International Workshop May 27-28, 2004, held at the Ibvan Franko National University of Lviv (Lviv: Litopys)
22-31 (2004 )
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I. O. Vakarchuk
The magnetic Bose liquid
J. Phys. Stud.
7, No. 1, 40-49 (2003)
[full text]
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R. Lavrycky, I. O. Vakarchuk, O. M. Popel
Physics at Lviv University before 1939
in: Physics and Mathematics at Wroclaw University. Past and Present. Proceedings of the 17th Max Born Symposium. Wroclaw, Poland, 18-19 October 2002. Ed. by J.Lukierski and H.Rechenberg
71-76 (2003)
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I. O. Vakarchuk
The 1/N-expansion in quantum mechanics. High-order approximations
J. Phys. Stud.
6, No. 1, 46-54 (2002)
[full text]
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I. O. Wakarczuk
Uniwersytet a problem dwóch kultur
Konspekt: Pismo Akademii Pedagogicznej w Krakowie
Nr. 9, 5-8 (zima 2001/2002)
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I. O. Vakarchuk, A. A. Rovenchak
Representation of the short-range interactions in liquid helium via modified hard sphere potentials
J. Phys. Stud.
5, No. 2, 126-130 (2001)
[full text]
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I. O. Vakarchuk
Is a quantum a great guesswork or a "forced" step?
J. Phys. Stud.
5, No. 1, 1-6 (2001)
[full text]
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I. O. Vakarchuk, A. A. Rovenchak
Thermodynamics of the Bose-system with a small number of particles
Condens. Matter Phys.
4, No. 3(27), 431-447 (2001)
[abs]
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I. O. Vakarchuk
Theory of relativity and its creators
Svit Fizyky (World of Physics)
No. 2, 3-15 (2001)
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I. O. Vakarchuk, V. V. Babin, A. A. Rovenchak
A potential energy of interaction between helium atoms
J. Phys. Stud.
4, No. 1, 16-22 (2000)
[full text]
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I. O. Vakarchuk
Is a quantum a great guesswork or a "forced" step?
Svit Fizyky (World of Physics)
No. 4, 9-15 (2000)
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I. O. Vakarchuk, H. Shopa
Max Karl Ernst Ludwig Planck
Svit Fizyky (World of Physics)
No. 4, 27-29 (2000)
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I. O. Vakarchuk, V. V. Babin
Low-temperature asymptotic behaviour of the impurity effective mass in surerfluid 4He
J. Phys. Stud.
3, No. 4, 468-473 (1999)
[full text]
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I. O. Vakarchuk
Once more on the superfluid 4He
J. Phys. Stud.
3, No. 3, 264-271 (1999)
[full text]
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I. O. Vakarchuk
Isaac Newton and his system of the World
Svit Fizyky (World of Physics)
¹2, 11-16 (1999)
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I. O. Vakarchuk, V. M. Tkachuk, T. V. Kuliy
Magnetic properties of dilute alloys: Equations for magnetization and its structural fluctuations
Phys. Stat. Solidi (b)
208, 167-186 (1998)
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I. O. Vakarchuk, V. V. Babin
Impurity effective mass in surerfluid 4He
Condens. Matter Phys.
1, No 1(13), 161-168 (1998)
[abs]
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I. O. Vakarchuk, V. V. Babin
Effective mass of impurity in superfluid 4He
Visnyk Lviv. Univ. Ser. Fiz.
31, 13-16 (1998)
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I. O. Vakarchuk, R.E.Rykalyuk, L.M.Yankiv-Vitkovska
A temperature dependence of the width of the atom spectral lines in stellar atmospheres
J. Phys. Stud.
2, No. 1, 16-22 (1998)
[full text]
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I. O. Vakarchuk, P. A. Hlushak, M. V. Tokarchuk
A consistent description of kinetics and hydrodynamics of quantum Bose-systems. ². Transport equation
Óêð. ô³ç. æóðí.
42, ¹9, 1150-1158 (1997)
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I. O. Vakarchuk, K. Vasylyna
Calculation of the density matrix of liquid 4He
Condens. Matter Phys.
Iss. 9, 117-126 (1997)
[abs]
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I. O. Vakarchuk
New results for the distribution functions of many-particle quantum systems
J. Phys. Stud.
1, 156-168 (1997)
[full text]
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I. O. Vakarchuk, P. A. Hlushak
Calculation of thermodynamic functions of superfluid 4He at low temperatures. 1. Free energy
Ukr. Fiz. Zhurn.
41, 569-576 (1996)
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I. O. Vakarchuk
Statistical operator of a system of identical interacting particles in coordinate representation
J. Phys. Stud.
1, 25-38 (1996)
[full text]
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I. O. Vakarchuk, V. M. Tkachuk, T. V. Kuliy
The influence of structure disorder on mean atomic momentum fluctuations and the spin-wave spectrum
J. Magn. Magn. Matter.
146, 191-194 (1995)
[abs]
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I. O. Vakarchuk
Density matrix of the system of identical particles, interacting via oscillator forces
Condens. Matter Phys.
Iss. 5, 203-209 (1995)
[abs]
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I. O. Vakarchuk, R. E. Rykalyuk, L. M. Yankiv-Vitkovska
The calculation of contribution from post-var-der-Waals multipole interactions in the temperature dependence of the damping constant of spectral lines of atoms
Informational Bulletin of the Ukrainian Astronomical Association
7, 86-87 (1995)
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I. O. Vakarchuk, V. M. Myhal, V. M. Tkachuk
Electron-phonon interaction influence on electron and phonon excitations in amorphous metals
Phys. Stat. Sol. (b)
185, 101-115 (1994)
[abs]
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I. O. Vakarchuk, V. M. Tkachuk, T. V. Kuliy
The influence of spins' structure fluctuation on the spectrum and damping of spin waves in amorphous ferromagnets
Condens. Matter Phys.
Iss. 3, 176-180 (1994)
[abs]